diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e8ae69f..7ed88e8 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,6 +18,16 @@ jobs:
     strategy:
       matrix:
         include:
+          - name: Python 3.12 Schema validation tests
+            python-version: '3.12'
+            os: ubuntu-latest
+            toxenv: py312
+
+          - name: Python 3.11 Schema validation tests
+            python-version: '3.11'
+            os: ubuntu-latest
+            toxenv: py311
+
           - name: Python 3.10 Schema validation tests
             python-version: '3.10'
             os: ubuntu-latest
@@ -28,11 +38,6 @@ jobs:
             os: ubuntu-latest
             toxenv: py39
 
-          - name: Python 3.8 Schema validation tests
-            python-version: 3.8
-            os: ubuntu-latest
-            toxenv: py38
-
           - name: Twine check
             python-version: 3.9
             os: ubuntu-latest
@@ -91,6 +96,8 @@ jobs:
           python-version: 3.9
       - name: Install asdf-wcs-schemas
         run: cd asdf-wcs-schemas && pip install .
+      - name: Install older pytest
+        run: pip install "pytest<8.1"
       - name: Install gwcs
         run: cd gwcs && pip install -e .[test]
       - name: Pip Freeze
diff --git a/CHANGES.rst b/CHANGES.rst
index 4dbc41c..66dbf23 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,3 +1,8 @@
+0.3.1 (unreleased)
+------------------
+
+- Update schemas for ASDF standard 1.6.0. [#59]
+
 0.3.0 (2023-11-28)
 ------------------
 
diff --git a/pyproject.toml b/pyproject.toml
index 4e085a8..c32db1d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -2,22 +2,22 @@
 name = 'asdf_wcs_schemas'
 description = 'ASDF WCS schemas'
 readme = 'README.md'
-requires-python = '>=3.8'
+requires-python = '>=3.9'
 license = { file = 'LICENSE' }
 authors = [{ name = 'The ASDF Developers', email = 'help@stsci.edu' }]
 classifiers = [
     'Programming Language :: Python',
     'Programming Language :: Python :: 3',
-    'Programming Language :: Python :: 3.8',
     'Programming Language :: Python :: 3.9',
     'Programming Language :: Python :: 3.10',
+    'Programming Language :: Python :: 3.11',
+    'Programming Language :: Python :: 3.12',
     'Development Status :: 5 - Production/Stable',
 ]
 dependencies = [
-    'asdf-standard >= 1.0.1',
-    'asdf-transform-schemas >= 0.3.0',
-    'asdf-unit-schemas >= 0.1.0',
-    'importlib_resources >= 3; python_version<"3.9"',
+    'asdf-standard >= 1.1.0',
+    'asdf-transform-schemas >= 0.5.0',
+    'asdf-coordinates-schemas >= 0.3.0',
 ]
 dynamic = ['version']
 
@@ -43,7 +43,6 @@ docs = [
 ]
 test = [
     'pytest >= 4.6.0',
-    'pytest-openfiles >= 0.5.0',
     'asdf >= 2.8.0',
     'asdf-astropy',
 ]
diff --git a/resources/manifests/gwcs-1.3.0.yaml b/resources/manifests/gwcs-1.3.0.yaml
new file mode 100644
index 0000000..61f4b24
--- /dev/null
+++ b/resources/manifests/gwcs-1.3.0.yaml
@@ -0,0 +1,124 @@
+%YAML 1.1
+---
+id: asdf://asdf-format.org/astronomy/gwcs/manifests/gwcs-1.3.0
+extension_uri: asdf://asdf-format.org/astronomy/gwcs/extensions/gwcs-1.3.0
+title: gwcs extension 1.3.0
+description: |-
+  A set of tags for serializing STScI gwcs models.
+asdf_standard_requirement:
+  gte: 1.6.0
+tags:
+- tag_uri: tag:stsci.edu:gwcs/celestial_frame-1.1.0
+  schema_uri: http://stsci.edu/schemas/gwcs/celestial_frame-1.1.0
+  title: A celestial frame
+  description: |-
+    Represents a celestial frame
+- tag_uri: tag:stsci.edu:gwcs/composite_frame-1.0.0
+  schema_uri: http://stsci.edu/schemas/gwcs/composite_frame-1.0.0
+  title: A set of frames
+  description: |-
+    Represents a set of frames
+- tag_uri: "tag:stsci.edu:gwcs/direction_cosines-1.2.0"
+  schema_uri: "http://stsci.edu/schemas/gwcs/direction_cosines-1.2.0"
+  title: >
+    Convert coordinates between vector and direction cosine form.
+  description: |
+    This schema is for transforms which convert to and from direction cosines.
+- tag_uri: "tag:stsci.edu:gwcs/frame2d-1.1.0"
+  schema_uri: "http://stsci.edu/schemas/gwcs/frame2d-1.1.0"
+  title: >
+    Represents a 2D frame.
+  description: |
+    Represents a 2D frame.
+- tag_uri: "tag:stsci.edu:gwcs/frame-1.1.0"
+  schema_uri: "http://stsci.edu/schemas/gwcs/frame-1.1.0"
+  title: |
+    The base class of all coordinate frames.
+  description: |
+    These objects are designed to be nested in arbitrary ways to build up
+    transformation pipelines out of a number of low-level pieces.
+- tag_uri: "tag:stsci.edu:gwcs/grating_equation-1.2.0"
+  schema_uri: "http://stsci.edu/schemas/gwcs/grating_equation-1.2.0"
+  title: >
+    A grating equation model.
+  description: |
+    Supports two models:
+     - Given incident angle and wavelength compute the refraction/difraction angle.
+     - Given an incident angle and a refraction angle compute the wavelength.
+- tag_uri: "tag:stsci.edu:gwcs/label_mapper-1.2.0"
+  schema_uri: "http://stsci.edu/schemas/gwcs/label_mapper-1.2.0"
+  title: >
+    Represents a mapping from a coordinate value to a label.
+  description: |
+    A label mapper instance maps inputs to a label.  It is used together
+    with
+    [regions_selector](ref:regions_selector-1.2.0). The
+    [label_mapper](ref:label_mapper-1.2.0)
+    returns the label corresponding to given inputs. The
+    [regions_selector](ref:regions_selector-1.2.0)
+    returns the transform corresponding to this label. This maps inputs
+    (e.g. pixels on a detector) to transforms uniquely.
+- tag_uri: "tag:stsci.edu:gwcs/regions_selector-1.2.0"
+  schema_uri: "http://stsci.edu/schemas/gwcs/regions_selector-1.2.0"
+  title: >
+    Represents a discontinuous transform.
+  description: |
+    Maps regions to transgorms and evaluates the transforms with the corresponding inputs.
+- tag_uri: "tag:stsci.edu:gwcs/sellmeier_glass-1.2.0"
+  schema_uri: "http://stsci.edu/schemas/gwcs/sellmeier_glass-1.2.0"
+  title: >
+    Sellmeier equation for glass
+  description: |
+    Sellmeier equation for glass.
+
+    $$ n(\\lambda)^2 = 1 + \\frac{(B1 * \\lambda^2 )}{(\\lambda^2 - C1)} +
+       \\frac{(B2 * \\lambda^2 )}{(\\lambda^2 - C2)} +
+       \\frac{(B3 * \\lambda^2 )}{(\\lambda^2 - C3)} $$
+- tag_uri: "tag:stsci.edu:gwcs/sellmeier_zemax-1.2.0"
+  schema_uri: "http://stsci.edu/schemas/gwcs/sellmeier_zemax-1.2.0"
+  title: Sellmeier equation for glass used by Zemax
+  description: |
+    Sellmeier equation for glass used by Zemax
+- tag_uri: "tag:stsci.edu:gwcs/snell3d-1.2.0"
+  schema_uri: "http://stsci.edu/schemas/gwcs/snell3d-1.2.0"
+  title: Snell Law in 3D space
+  description: |
+    Snell Law in 3D.
+    Inputs are index of refraction and direction cosines.
+    Outputs are direction cosines.
+- tag_uri: "tag:stsci.edu:gwcs/spectral_frame-1.1.0"
+  schema_uri: "http://stsci.edu/schemas/gwcs/spectral_frame-1.1.0"
+  title: >
+    Represents a spectral frame.
+  description: >
+- tag_uri: "tag:stsci.edu:gwcs/spherical_cartesian-1.2.0"
+  schema_uri: "http://stsci.edu/schemas/gwcs/spherical_cartesian-1.2.0"
+  title: >
+    Convert coordinates between spherical and Cartesian coordinates.
+  description: |
+    This schema is for transforms which convert between spherical coordinates
+    (on the unit sphere) and Cartesian coordinates.
+- tag_uri: "tag:stsci.edu:gwcs/step-1.2.0"
+  schema_uri: "http://stsci.edu/schemas/gwcs/step-1.2.0"
+  title: >
+    Describes a single step of a WCS transform pipeline.
+  description: >
+- tag_uri: "tag:stsci.edu:gwcs/stokes_frame-1.0.0"
+  schema_uri: "http://stsci.edu/schemas/gwcs/stokes_frame-1.0.0"
+  title: >
+    Represents a stokes frame
+  description: >
+- tag_uri: "tag:stsci.edu:gwcs/temporal_frame-1.1.0"
+  schema_uri: "http://stsci.edu/schemas/gwcs/temporal_frame-1.1.0"
+  title: >
+    Represents a temporal frame.
+  description: >
+- tag_uri: "tag:stsci.edu:gwcs/wcs-1.3.0"
+  schema_uri: "http://stsci.edu/schemas/gwcs/wcs-1.3.0"
+  title: >
+    A system for describing generalized world coordinate transformations.
+  description: >
+    ASDF WCS is a way of specifying transformations (usually from
+    detector space to world coordinate space and back) by using the
+    transformations in the `transform-schema` module.
+...
diff --git a/resources/schemas/stsci.edu/gwcs/celestial_frame-1.1.0.yaml b/resources/schemas/stsci.edu/gwcs/celestial_frame-1.1.0.yaml
new file mode 100644
index 0000000..49d8878
--- /dev/null
+++ b/resources/schemas/stsci.edu/gwcs/celestial_frame-1.1.0.yaml
@@ -0,0 +1,25 @@
+%YAML 1.1
+---
+$schema: "http://stsci.edu/schemas/yaml-schema/draft-01"
+id: "http://stsci.edu/schemas/gwcs/celestial_frame-1.1.0"
+
+title: >
+  Represents a celestial frame.
+
+allOf:
+  - type: object
+    properties:
+      axes_names:
+        minItems: 2
+        maxItems: 3
+
+      axes_order:
+        minItems: 2
+        maxItems: 3
+
+      unit:
+        minItems: 2
+        maxItems: 3
+
+  - $ref: frame-1.1.0
+...
diff --git a/resources/schemas/stsci.edu/gwcs/direction_cosines-1.2.0.yaml b/resources/schemas/stsci.edu/gwcs/direction_cosines-1.2.0.yaml
new file mode 100644
index 0000000..f108ad4
--- /dev/null
+++ b/resources/schemas/stsci.edu/gwcs/direction_cosines-1.2.0.yaml
@@ -0,0 +1,38 @@
+%YAML 1.1
+---
+$schema: "http://stsci.edu/schemas/yaml-schema/draft-01"
+id: "http://stsci.edu/schemas/gwcs/direction_cosines-1.2.0"
+
+title: >
+  Convert coordinates between vector and direction cosine form.
+
+description: |
+  This schema is for transforms which convert to and from direction cosines.
+
+examples:
+  -
+    - Convert direction cosines to vectors.
+    - asdf-standard-1.6.0
+    - |
+
+        !<tag:stsci.edu:gwcs/direction_cosines-1.2.0>
+          transform_type: from_direction_cosines
+
+  -
+    - Convert vectors to directional cosines.
+    - asdf-standard-1.6.0
+    - |
+        !<tag:stsci.edu:gwcs/direction_cosines-1.2.0>
+          transform_type: to_direction_cosines
+
+allOf:
+  - $ref:  "http://stsci.edu/schemas/asdf/transform/transform-1.3.0"
+  - object:
+    properties:
+      transform_type:
+        description: |
+          The type of transform/class to initialize.
+        type: string
+        enum: [to_direction_cosines, from_direction_cosines]
+    required: [transform_type]
+...
diff --git a/resources/schemas/stsci.edu/gwcs/frame-1.1.0.yaml b/resources/schemas/stsci.edu/gwcs/frame-1.1.0.yaml
new file mode 100644
index 0000000..10b0bcd
--- /dev/null
+++ b/resources/schemas/stsci.edu/gwcs/frame-1.1.0.yaml
@@ -0,0 +1,85 @@
+%YAML 1.1
+---
+$schema: "http://stsci.edu/schemas/yaml-schema/draft-01"
+id: "http://stsci.edu/schemas/gwcs/frame-1.1.0"
+title: |
+  The base class of all coordinate frames.
+
+description: |
+  These objects are designed to be nested in arbitrary ways to build up
+  transformation pipelines out of a number of low-level pieces.
+
+examples:
+  -
+    - |
+        A celestial frame in the ICRS reference frame.
+    - asdf-standard-1.6.0
+    - |
+        !<tag:stsci.edu:gwcs/celestial_frame-1.1.0>
+          axes_names: [lon, lat]
+          name: CelestialFrame
+          reference_frame: !<tag:astropy.org:astropy/coordinates/frames/icrs-1.1.0>
+            frame_attributes: {}
+          unit: [!unit/unit-1.0.0 deg, !unit/unit-1.0.0 deg]
+
+  -
+    - |
+        A pixel frame in three dimensions
+    - asdf-standard-1.6.0
+    - |
+        !<tag:stsci.edu:gwcs/frame-1.1.0>
+          axes_names: [raster position, slit position, wavelength]
+          axes_order: [0, 1, 2]
+          axes_type: [SPATIAL, SPATIAL, SPECTRAL]
+          name: pixel
+          naxes: 3
+          unit: [!unit/unit-1.0.0 pixel, !unit/unit-1.0.0 pixel, !unit/unit-1.0.0 pixel]
+
+type: object
+properties:
+  name:
+    description: |
+      A user-friendly name for the frame.
+    type: string
+
+  axes_order:
+    description: |
+      The order of the axes.
+    type: array
+    items:
+      type: integer
+
+  axes_names:
+    description: |
+      The name of each axis in this frame.
+    type: array
+    items:
+      anyOf:
+        - type: string
+        - type: 'null'
+
+  reference_frame:
+    description: |
+      The reference frame.
+    $ref: "http://astropy.org/schemas/astropy/coordinates/frames/baseframe-1.1.0"
+
+  unit:
+    description: |
+      Units for each axis.
+    type: array
+    items:
+      $ref: "http://stsci.edu/schemas/asdf/unit/unit-1.0.0"
+
+  axis_physical_types:
+    description: |
+      An iterable of strings describing the physical type for each world axis.
+      These should be names from the VO UCD1+ controlled Vocabulary
+      (http://www.ivoa.net/documents/latest/UCDlist.html).
+    type: array
+    items:
+      type:
+        string
+
+required: [name]
+additionalProperties: true
+...
diff --git a/resources/schemas/stsci.edu/gwcs/frame2d-1.1.0.yaml b/resources/schemas/stsci.edu/gwcs/frame2d-1.1.0.yaml
new file mode 100644
index 0000000..5620a0f
--- /dev/null
+++ b/resources/schemas/stsci.edu/gwcs/frame2d-1.1.0.yaml
@@ -0,0 +1,36 @@
+%YAML 1.1
+---
+$schema: "http://stsci.edu/schemas/yaml-schema/draft-01"
+id: "http://stsci.edu/schemas/gwcs/frame2d-1.1.0"
+
+title: >
+  Represents a 2D frame.
+
+examples:
+  -
+    - |
+        A two dimensional spatial frame
+    - |
+        !<tag:stsci.edu:gwcs/frame2d-1.1.0>
+          axes_names: [lon, lat]
+          name: Frame2D
+          unit: [!unit/unit-1.0.0 pixel, !unit/unit-1.0.0 pixel]
+
+
+allOf:
+  - type: object
+    properties:
+      axes_names:
+        minItems: 2
+        maxItems: 2
+
+      axes_order:
+        minItems: 2
+        maxItems: 2
+
+      unit:
+        minItems: 2
+        maxItems: 2
+
+  - $ref: frame-1.1.0
+...
diff --git a/resources/schemas/stsci.edu/gwcs/grating_equation-1.2.0.yaml b/resources/schemas/stsci.edu/gwcs/grating_equation-1.2.0.yaml
new file mode 100644
index 0000000..0586284
--- /dev/null
+++ b/resources/schemas/stsci.edu/gwcs/grating_equation-1.2.0.yaml
@@ -0,0 +1,52 @@
+%YAML 1.1
+---
+$schema: "http://stsci.edu/schemas/yaml-schema/draft-01"
+id: "http://stsci.edu/schemas/gwcs/grating_equation-1.2.0"
+
+title: >
+  A grating equation model.
+description: |
+  Supports two models:
+   - Given incident angle and wavelength compute the refraction/difraction angle.
+   - Given an incident angle and a refraction angle compute the wavelength.
+
+examples:
+  -
+    - AnglesFromGratingEquation3D model.
+    - asdf-standard-1.6.0
+    - |
+        !<tag:stsci.edu:gwcs/grating_equation-1.2.0>
+          groove_density: 2700.0
+          order: 2.0
+          output: angle
+
+  -
+    - WavelengthFromGratingEquation model.
+    - asdf-standard-1.6.0
+    - |
+        !<tag:stsci.edu:gwcs/grating_equation-1.2.0>
+          groove_density: 2700.0
+          order: 2.0
+          output: wavelength
+
+allOf:
+  - $ref: "http://stsci.edu/schemas/asdf/transform/transform-1.3.0"
+  - type: object
+    properties:
+      groove_density:
+        description: |
+          The groove density of the grating
+        anyOf:
+          - type: number
+          - $ref: "http://stsci.edu/schemas/asdf/unit/quantity-1.2.0"
+      order:
+        description: |
+          Spectral order
+        type: number
+      output:
+        type: string
+        description: |
+          indicates which quantity the grating equation is solved for.
+        enum: [wavelength, angle]
+    required: [groove_density, order, output]
+...
diff --git a/resources/schemas/stsci.edu/gwcs/label_mapper-1.0.0.yaml b/resources/schemas/stsci.edu/gwcs/label_mapper-1.0.0.yaml
index ea19975..d34a2b3 100644
--- a/resources/schemas/stsci.edu/gwcs/label_mapper-1.0.0.yaml
+++ b/resources/schemas/stsci.edu/gwcs/label_mapper-1.0.0.yaml
@@ -17,7 +17,7 @@ description: |
 examples:
   -
     - Map array indices are to labels.
-
+    - asdf-standard-1.5.0
     - |
         !<tag:stsci.edu:gwcs/label_mapper-1.0.0>
           mapper: !core/ndarray-1.0.0
diff --git a/resources/schemas/stsci.edu/gwcs/label_mapper-1.1.0.yaml b/resources/schemas/stsci.edu/gwcs/label_mapper-1.1.0.yaml
index 92cc184..06b9ffd 100644
--- a/resources/schemas/stsci.edu/gwcs/label_mapper-1.1.0.yaml
+++ b/resources/schemas/stsci.edu/gwcs/label_mapper-1.1.0.yaml
@@ -17,7 +17,7 @@ description: |
 examples:
   -
     - Map array indices are to labels.
-
+    - asdf-standard-1.5.0
     - |
         !<tag:stsci.edu:gwcs/label_mapper-1.1.0>
           mapper: !core/ndarray-1.0.0
diff --git a/resources/schemas/stsci.edu/gwcs/label_mapper-1.2.0.yaml b/resources/schemas/stsci.edu/gwcs/label_mapper-1.2.0.yaml
new file mode 100644
index 0000000..6a69969
--- /dev/null
+++ b/resources/schemas/stsci.edu/gwcs/label_mapper-1.2.0.yaml
@@ -0,0 +1,129 @@
+%YAML 1.1
+---
+$schema: "http://stsci.edu/schemas/yaml-schema/draft-01"
+id: "http://stsci.edu/schemas/gwcs/label_mapper-1.2.0"
+title: >
+  Represents a mapping from a coordinate value to a label.
+description: |
+  A label mapper instance maps inputs to a label.  It is used together
+  with
+  [regions_selector](ref:regions_selector-1.2.0). The
+  [label_mapper](ref:label_mapper-1.2.0)
+  returns the label corresponding to given inputs. The
+  [regions_selector](ref:regions_selector-1.2.0)
+  returns the transform corresponding to this label. This maps inputs
+  (e.g. pixels on a detector) to transforms uniquely.
+
+examples:
+  -
+    - Map array indices are to labels.
+    - asdf-standard-1.6.0
+    - |
+        !<tag:stsci.edu:gwcs/label_mapper-1.2.0>
+          mapper: !core/ndarray-1.1.0
+            data:
+            - [1, 0, 2]
+            - [1, 0, 2]
+            - [1, 0, 2]
+            datatype: int64
+            shape: [3, 3]
+            no_label: 0
+
+  -
+    - Map numbers dictionary to transforms which return labels.
+    - asdf-standard-1.6.0
+    - |
+        !<tag:stsci.edu:gwcs/label_mapper-1.2.0>
+          atol: 1.0e-08
+          inputs: [x, y]
+          inputs_mapping: !transform/remap_axes-1.4.0
+              mapping: [0]
+              n_inputs: 2
+          mapper: !!omap
+            - !!omap
+              labels: [-1.67833272, -1.9580548, -1.118888]
+            - !!omap
+              models:
+              - !transform/shift-1.2.0 {offset: 6.0}
+              - !transform/shift-1.2.0 {offset: 2.0}
+              - !transform/shift-1.2.0 {offset: 4.0}
+          no_label: 0
+
+  -
+    - Map a number within a range of numbers to transforms which return labels.
+    - asdf-standard-1.6.0
+    - |
+        !<tag:stsci.edu:gwcs/label_mapper-1.2.0>
+          mapper: !!omap
+          - !!omap
+            labels:
+            - [3.2, 4.1]
+            - [2.67, 2.98]
+            - [1.95, 2.3]
+          - !!omap
+            models:
+            - !transform/shift-1.3.0 {offset: 6.0}
+            - !transform/shift-1.3.0 {offset: 2.0}
+            - !transform/shift-1.3.0 {offset: 4.0}
+          inputs: [x, y]
+          inputs_mapping: !transform/remap_axes-1.4.0
+            mapping: [0]
+            n_inputs: 2
+
+allOf:
+  - $ref: "http://stsci.edu/schemas/asdf/transform/transform-1.3.0"
+  - type: object
+    properties:
+      mapper:
+        description: |
+          A mapping of inputs to labels.
+          In the general case this is a `astropy.modeling.core.Model`.
+
+          It could be a numpy array with the shape of the detector/observation.
+          Pixel values are of type integer or string and represent
+          region labels. Pixels which are not within any region have value ``no_label``.
+
+          It could be a dictionary which maps tuples to labels or floating point numbers to labels.
+
+        anyOf:
+          - $ref: "http://stsci.edu/schemas/asdf/core/ndarray-1.1.0"
+          - $ref: "http://stsci.edu/schemas/asdf/transform/transform-1.3.0"
+          - type: object
+            properties:
+              labels:
+                type: array
+                items:
+                  anyOf:
+                    - type: number
+                    - type: array
+                      items:
+                        type: number
+                      minLength: 2
+                      maxLength: 2
+              models:
+                type: array
+                items:
+                  $ref: "http://stsci.edu/schemas/asdf/transform/transform-1.3.0"
+
+      inputs:
+        type: array
+        items:
+          type: string
+        description: |
+          Names of inputs.
+      inputs_mapping:
+        $ref: "http://stsci.edu/schemas/asdf/transform/transform-1.3.0"
+        description: |
+          [mapping](https://asdf-standard.readthedocs.io/en/latest/generated/stsci.edu/asdf/transform/remap_axes-1.4.0.html)
+      atol:
+        type: number
+        description: |
+          absolute tolerance to compare keys in mapper.
+      no_label:
+        description: |
+          Fill in value for missing output.
+        anyOf:
+          - type: number
+          - type: string
+    required: [mapper]
+...
diff --git a/resources/schemas/stsci.edu/gwcs/regions_selector-1.0.0.yaml b/resources/schemas/stsci.edu/gwcs/regions_selector-1.0.0.yaml
index 211a697..242cd26 100644
--- a/resources/schemas/stsci.edu/gwcs/regions_selector-1.0.0.yaml
+++ b/resources/schemas/stsci.edu/gwcs/regions_selector-1.0.0.yaml
@@ -10,6 +10,7 @@ description: |
 examples:
   -
     - Create a regions_selector schema for 2 regions, labeled "1" and "2".
+    - asdf-standard-1.5.0
     - |
         !<tag:stsci.edu:gwcs/regions_selector-1.0.0>
           inputs: [x, y]
diff --git a/resources/schemas/stsci.edu/gwcs/regions_selector-1.1.0.yaml b/resources/schemas/stsci.edu/gwcs/regions_selector-1.1.0.yaml
index a0c3ed4..40e1745 100644
--- a/resources/schemas/stsci.edu/gwcs/regions_selector-1.1.0.yaml
+++ b/resources/schemas/stsci.edu/gwcs/regions_selector-1.1.0.yaml
@@ -10,6 +10,7 @@ description: |
 examples:
   -
     - Create a regions_selector schema for 2 regions, labeled "1" and "2".
+    - asdf-standard-1.5.0
     - |
         !<tag:stsci.edu:gwcs/regions_selector-1.1.0>
           inputs: [x, y]
diff --git a/resources/schemas/stsci.edu/gwcs/regions_selector-1.2.0.yaml b/resources/schemas/stsci.edu/gwcs/regions_selector-1.2.0.yaml
new file mode 100644
index 0000000..a282548
--- /dev/null
+++ b/resources/schemas/stsci.edu/gwcs/regions_selector-1.2.0.yaml
@@ -0,0 +1,105 @@
+%YAML 1.1
+---
+$schema: "http://stsci.edu/schemas/yaml-schema/draft-01"
+id: "http://stsci.edu/schemas/gwcs/regions_selector-1.2.0"
+title: >
+  Represents a discontinuous transform.
+description: |
+  Maps regions to transgorms and evaluates the transforms with the corresponding inputs.
+
+examples:
+  -
+    - Create a regions_selector schema for 2 regions, labeled "1" and "2".
+    - asdf-standard-1.6.0
+    - |
+        !<tag:stsci.edu:gwcs/regions_selector-1.2.0>
+          inputs: [x, y]
+          label_mapper: !<tag:stsci.edu:gwcs/label_mapper-1.2.0>
+            mapper: !core/ndarray-1.1.0
+              datatype: int8
+              data:
+              - [0, 1, 1, 0, 2, 0]
+              - [0, 1, 1, 0, 2, 0]
+              - [0, 1, 1, 0, 2, 0]
+              - [0, 1, 1, 0, 2, 0]
+              - [0, 1, 1, 0, 2, 0]
+              datatype: int64
+              shape: [5, 6]
+          no_label: 0
+          outputs: [ra, dec, lam]
+          selector: !!omap
+          - !!omap
+            labels: [1, 2]
+          - !!omap
+            transforms:
+            - !transform/compose-1.3.0
+              forward:
+              - !transform/remap_axes-1.4.0
+                mapping: [0, 1, 1]
+              - !transform/concatenate-1.3.0
+                forward:
+                - !transform/concatenate-1.3.0
+                  forward:
+                  - !transform/shift-1.3.0 {offset: 1.0}
+                  - !transform/shift-1.3.0 {offset: 2.0}
+                - !transform/shift-1.3.0 {offset: 3.0}
+            - !transform/compose-1.3.0
+              forward:
+              - !transform/remap_axes-1.4.0
+                mapping: [0, 1, 1]
+              - !transform/concatenate-1.3.0
+                forward:
+                - !transform/concatenate-1.3.0
+                  forward:
+                  - !transform/scale-1.3.0 {factor: 2.0}
+                  - !transform/scale-1.3.0 {factor: 3.0}
+                - !transform/scale-1.3.0 {factor: 3.0}
+          undefined_transform_value: .nan
+
+
+allOf:
+  - $ref: "http://stsci.edu/schemas/asdf/transform/transform-1.3.0"
+  - type: object
+    properties:
+      label_mapper:
+        description: |
+          An instance of
+          [label_mapper-1.1.0](ref:label_mapper-1.2.0)
+        $ref: "./label_mapper-1.2.0"
+      inputs:
+        description: |
+          Names of inputs.
+        type: array
+        items:
+          type: string
+      outputs:
+        description: |
+          Names of outputs.
+        type: array
+        items:
+          type: string
+      selector:
+        description: |
+          A mapping of regions to trransforms.
+        type: object
+        properties:
+          labels:
+            description: |
+              An array of unique region labels.
+            type: array
+            items:
+              type:
+                - integer
+                - string
+          transforms:
+            description: |
+              A transform for each region. The order should match the order of labels.
+            type: array
+            items:
+              $ref: "http://stsci.edu/schemas/asdf/transform/transform-1.3.0"
+      undefined_transform_value:
+        description: |
+          Value to be returned if there's no transform defined for the inputs.
+        type: number
+    required: [label_mapper, inputs, outputs, selector]
+...
diff --git a/resources/schemas/stsci.edu/gwcs/sellmeier_glass-1.2.0.yaml b/resources/schemas/stsci.edu/gwcs/sellmeier_glass-1.2.0.yaml
new file mode 100644
index 0000000..c547799
--- /dev/null
+++ b/resources/schemas/stsci.edu/gwcs/sellmeier_glass-1.2.0.yaml
@@ -0,0 +1,38 @@
+%YAML 1.1
+---
+$schema: "http://stsci.edu/schemas/yaml-schema/draft-01"
+id: "http://stsci.edu/schemas/gwcs/sellmeier_glass-1.2.0"
+title: Sellmeier equation for glass
+
+description: |
+  Sellmeier equation for glass.
+
+  $$ n(\\lambda)^2 = 1 + \\frac{(B1 * \\lambda^2 )}{(\\lambda^2 - C1)} +
+     \\frac{(B2 * \\lambda^2 )}{(\\lambda^2 - C2)} +
+     \\frac{(B3 * \\lambda^2 )}{(\\lambda^2 - C3)} $$
+
+allOf:
+  - $ref: "http://stsci.edu/schemas/asdf/transform/transform-1.3.0"
+  - type: object
+    properties:
+      B_coef:
+        description: |
+          B coefficients in Sellmeier equation.
+        anyOf:
+          - type: array
+          - $ref: "http://stsci.edu/schemas/asdf/core/ndarray-1.1.0"
+        items:
+          type: number
+        minItems: 3
+        maxItems: 3
+      C_coef:
+        description: |
+          C coefficients in Sellmeier equation.
+        anyOf:
+          - type: array
+          - $ref: "http://stsci.edu/schemas/asdf/core/ndarray-1.1.0"
+        items:
+          type: number
+        minItems: 3
+        maxItems: 3
+...
diff --git a/resources/schemas/stsci.edu/gwcs/sellmeier_zemax-1.2.0.yaml b/resources/schemas/stsci.edu/gwcs/sellmeier_zemax-1.2.0.yaml
new file mode 100644
index 0000000..c670ad2
--- /dev/null
+++ b/resources/schemas/stsci.edu/gwcs/sellmeier_zemax-1.2.0.yaml
@@ -0,0 +1,72 @@
+%YAML 1.1
+---
+$schema: "http://stsci.edu/schemas/yaml-schema/draft-01"
+id: "http://stsci.edu/schemas/gwcs/sellmeier_zemax-1.2.0"
+title: Sellmeier equation for glass used by Zemax
+
+description: |
+  Sellmeier equation for glass used by Zemax
+
+allOf:
+  - $ref: "http://stsci.edu/schemas/asdf/transform/transform-1.3.0"
+  - type: object
+    properties:
+      B_coef:
+        description: |
+          B coefficients in Sellmeier equation.
+        anyOf:
+          - type: array
+          - $ref: "http://stsci.edu/schemas/asdf/core/ndarray-1.1.0"
+        items:
+          type: number
+        minItems: 3
+        maxItems: 3
+      C_coef:
+        description: |
+          C coefficients in Sellmeier equation.
+        anyOf:
+          - type: array
+          - $ref: "http://stsci.edu/schemas/asdf/core/ndarray-1.1.0"
+        items:
+          type: number
+        minItems: 3
+        maxItems: 3
+      D_coef:
+        description: |
+          Thermal D coefficients of the glass.
+        anyOf:
+          - type: array
+          - $ref: "http://stsci.edu/schemas/asdf/core/ndarray-1.1.0"
+        items:
+          type: number
+        minItems: 3
+        maxItems: 3
+      E_coef:
+        description: |
+          Thermal E coefficients of the glass.
+        anyOf:
+          - type: array
+          - $ref: "http://stsci.edu/schemas/asdf/core/ndarray-1.1.0"
+        items:
+          type: number
+        minItems: 3
+        maxItems: 3
+      ref_temperature:
+        description: |
+          Reference temperature of the glass in Kelvin.
+        type: number
+      ref_pressure:
+        description: |
+          Reference pressure of the glass in ATM.
+        type: number
+      temperature:
+        description: |
+          System temperature in Kelvin.
+        type: number
+      pressure:
+        description: |
+          System pressure in ATM.
+        type: number
+    required: [B_coef, C_coef, D_coef, E_coef, ref_temperature,
+               ref_pressure, temperature, pressure]
+...
diff --git a/resources/schemas/stsci.edu/gwcs/snell3d-1.2.0.yaml b/resources/schemas/stsci.edu/gwcs/snell3d-1.2.0.yaml
new file mode 100644
index 0000000..87be47a
--- /dev/null
+++ b/resources/schemas/stsci.edu/gwcs/snell3d-1.2.0.yaml
@@ -0,0 +1,13 @@
+%YAML 1.1
+---
+$schema: "http://stsci.edu/schemas/yaml-schema/draft-01"
+id: "http://stsci.edu/schemas/gwcs/snell3d-1.2.0"
+title: Snell Law in 3D space
+
+description: |
+  Snell Law in 3D.
+  Inputs are index of refraction and direction cosines.
+  Outputs are direction cosines.
+
+$ref: "http://stsci.edu/schemas/asdf/transform/transform-1.3.0"
+...
diff --git a/resources/schemas/stsci.edu/gwcs/spectral_frame-1.1.0.yaml b/resources/schemas/stsci.edu/gwcs/spectral_frame-1.1.0.yaml
new file mode 100644
index 0000000..78a804b
--- /dev/null
+++ b/resources/schemas/stsci.edu/gwcs/spectral_frame-1.1.0.yaml
@@ -0,0 +1,30 @@
+%YAML 1.1
+---
+$schema: "http://stsci.edu/schemas/yaml-schema/draft-01"
+id: "http://stsci.edu/schemas/gwcs/spectral_frame-1.1.0"
+
+title: >
+  Represents a spectral frame.
+allOf:
+  - type: object
+    properties:
+      reference_position:
+        description: |
+          The position of the reference frame.
+        enum: [geocenter, barycenter, heliocenter]
+        default: geocenter
+
+      axes_names:
+        minItems: 1
+        maxItems: 1
+
+      axes_order:
+        minItems: 1
+        maxItems: 1
+
+      unit:
+        minItems: 1
+        maxItems: 1
+
+  - $ref: frame-1.1.0
+...
diff --git a/resources/schemas/stsci.edu/gwcs/spherical_cartesian-1.0.0.yaml b/resources/schemas/stsci.edu/gwcs/spherical_cartesian-1.0.0.yaml
index 7936238..ada2d64 100644
--- a/resources/schemas/stsci.edu/gwcs/spherical_cartesian-1.0.0.yaml
+++ b/resources/schemas/stsci.edu/gwcs/spherical_cartesian-1.0.0.yaml
@@ -13,15 +13,14 @@ description: |
 examples:
   -
     - Convert spherical coordinates to Cartesian coordinates.
-
+    - asdf-standard-1.5.0
     - |
-
         !<tag:stsci.edu:gwcs/spherical_cartesian-1.0.0>
           transform_type: spherical_to_cartesian
 
   -
     - Convert Cartesian coordinates to spherical coordinates.
-
+    - asdf-standard-1.5.0
     - |
         !<tag:stsci.edu:gwcs/spherical_cartesian-1.0.0>
           transform_type: cartesian_to_spherical
diff --git a/resources/schemas/stsci.edu/gwcs/spherical_cartesian-1.1.0.yaml b/resources/schemas/stsci.edu/gwcs/spherical_cartesian-1.1.0.yaml
index a16b11c..6a1393a 100644
--- a/resources/schemas/stsci.edu/gwcs/spherical_cartesian-1.1.0.yaml
+++ b/resources/schemas/stsci.edu/gwcs/spherical_cartesian-1.1.0.yaml
@@ -13,7 +13,7 @@ description: |
 examples:
   -
     - Convert spherical coordinates to Cartesian coordinates.
-
+    - asdf-standard-1.5.0
     - |
 
         !<tag:stsci.edu:gwcs/spherical_cartesian-1.1.0>
@@ -21,7 +21,7 @@ examples:
 
   -
     - Convert Cartesian coordinates to spherical coordinates.
-
+    - asdf-standard-1.5.0
     - |
         !<tag:stsci.edu:gwcs/spherical_cartesian-1.1.0>
           transform_type: cartesian_to_spherical
diff --git a/resources/schemas/stsci.edu/gwcs/spherical_cartesian-1.2.0.yaml b/resources/schemas/stsci.edu/gwcs/spherical_cartesian-1.2.0.yaml
new file mode 100644
index 0000000..dc9bb1d
--- /dev/null
+++ b/resources/schemas/stsci.edu/gwcs/spherical_cartesian-1.2.0.yaml
@@ -0,0 +1,45 @@
+%YAML 1.1
+---
+$schema: "http://stsci.edu/schemas/yaml-schema/draft-01"
+id: "http://stsci.edu/schemas/gwcs/spherical_cartesian-1.2.0"
+
+title: >
+  Convert coordinates between spherical and Cartesian coordinates.
+
+description: |
+  This schema is for transforms which convert between spherical coordinates
+  (on the unit sphere) and Cartesian coordinates.
+
+examples:
+  -
+    - Convert spherical coordinates to Cartesian coordinates.
+    - asdf-standard-1.6.0
+    - |
+        !<tag:stsci.edu:gwcs/spherical_cartesian-1.2.0>
+          transform_type: spherical_to_cartesian
+          wrap_lon_at: 360
+
+  -
+    - Convert Cartesian coordinates to spherical coordinates.
+    - asdf-standard-1.6.0
+    - |
+        !<tag:stsci.edu:gwcs/spherical_cartesian-1.2.0>
+          transform_type: cartesian_to_spherical
+          wrap_lon_at: 360
+
+allOf:
+  - $ref:  "http://stsci.edu/schemas/asdf/transform/transform-1.3.0"
+  - object:
+    properties:
+      wrap_lon_at:
+        description: Angle at which to wrap the longitude angle.
+        type: integer
+        enum: [180, 360]
+        default: 360
+      transform_type:
+        description: The type of transform/class to initialize.
+        type: string
+        enum: [spherical_to_cartesian, cartesian_to_spherical]
+
+    required: [transform_type, wrap_lon_at]
+...
diff --git a/resources/schemas/stsci.edu/gwcs/step-1.2.0.yaml b/resources/schemas/stsci.edu/gwcs/step-1.2.0.yaml
new file mode 100644
index 0000000..6dfc5cb
--- /dev/null
+++ b/resources/schemas/stsci.edu/gwcs/step-1.2.0.yaml
@@ -0,0 +1,32 @@
+%YAML 1.1
+---
+$schema: "http://stsci.edu/schemas/yaml-schema/draft-01"
+id: "http://stsci.edu/schemas/gwcs/step-1.2.0"
+
+title: >
+  Describes a single step of a WCS transform pipeline.
+description: >
+examples: []
+
+type: object
+properties:
+  frame:
+    description: |
+      The frame of the inputs to the transform.
+    anyOf:
+      - type: string
+      - $ref: frame-1.1.0
+
+  transform:
+    description: |
+      The transform from this step to the next one.  The
+      last step in a WCS should not have a transform, but
+      exists only to describe the frames and units of the
+      final output axes.
+    anyOf:
+      - $ref: "http://stsci.edu/schemas/asdf/transform/transform-1.3.0"
+      - type: 'null'
+    default: null
+
+required: [frame]
+...
diff --git a/resources/schemas/stsci.edu/gwcs/temporal_frame-1.1.0.yaml b/resources/schemas/stsci.edu/gwcs/temporal_frame-1.1.0.yaml
new file mode 100644
index 0000000..c0d1f36
--- /dev/null
+++ b/resources/schemas/stsci.edu/gwcs/temporal_frame-1.1.0.yaml
@@ -0,0 +1,56 @@
+%YAML 1.1
+---
+$schema: "http://stsci.edu/schemas/yaml-schema/draft-01"
+id: "http://stsci.edu/schemas/gwcs/temporal_frame-1.1.0"
+
+title: >
+  Represents a temporal frame.
+
+
+type: object
+properties:
+  name:
+    description: |
+      A user-friendly name for the frame.
+    type: string
+
+  axes_order:
+    description: |
+      The order of the axes.
+    type: array
+    items:
+      type: integer
+
+  axes_names:
+    description: |
+      The name of each axis in this frame.
+    type: array
+    items:
+      anyOf:
+        - type: string
+        - type: 'null'
+
+  reference_frame:
+    description: |
+      The reference frame.
+    $ref: "http://stsci.edu/schemas/asdf/time/time-1.2.0"
+
+  unit:
+    description: |
+      Units for each axis.
+    type: array
+    items:
+      $ref: "http://stsci.edu/schemas/asdf/unit/unit-1.0.0"
+
+  axis_physical_types:
+    description: |
+      An iterable of strings describing the physical type for each world axis.
+      These should be names from the VO UCD1+ controlled Vocabulary
+      (http://www.ivoa.net/documents/latest/UCDlist.html).
+    type: array
+    items:
+      type:
+        string
+
+required: [name]
+...
diff --git a/resources/schemas/stsci.edu/gwcs/wcs-1.3.0.yaml b/resources/schemas/stsci.edu/gwcs/wcs-1.3.0.yaml
new file mode 100644
index 0000000..61eb2ac
--- /dev/null
+++ b/resources/schemas/stsci.edu/gwcs/wcs-1.3.0.yaml
@@ -0,0 +1,43 @@
+%YAML 1.1
+---
+$schema: "http://stsci.edu/schemas/yaml-schema/draft-01"
+id: "http://stsci.edu/schemas/gwcs/wcs-1.3.0"
+
+title: >
+  A system for describing generalized world coordinate transformations.
+description: >
+  ASDF WCS is a way of specifying transformations (usually from
+  detector space to world coordinate space and back) by using the
+  transformations in the `transform-schema` module.
+type: object
+properties:
+  name:
+    description: |
+      A descriptive name for this WCS.
+    type: string
+
+  pixel_shape:
+    description: |
+      The optional shape of the data that the WCS applies to as an array
+      in ``(x, y)`` order (where for an image, ``x`` is the horizontal
+      coordinate and ``y`` is the vertical coordinate) or ``None`` if not
+      defined for this WCS.
+    anyOf:
+      - type: 'null'
+      - type: array
+
+  steps:
+    description: |
+      A list of steps in the forward transformation from detector to
+      world coordinates.
+      The inverse transformation is determined automatically by
+      reversing this list, and inverting each of the individual
+      transforms according to the rules described in
+      [inverse](https://asdf-standard.readthedocs.io/en/latest/generated/stsci.edu/asdf/transform/transform-1.2.0.html#inverse).
+    type: array
+    items:
+      $ref: step-1.2.0
+
+required: [name, steps]
+additionalProperties: true
+...
diff --git a/tox.ini b/tox.ini
index 4c343ee..ce443e7 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist= py38,twine,black,flake8,bandit
+envlist= py39,py310,py311,py312,twine,black,flake8,bandit
 isolated_build = True
 
 [testenv]