diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3ed7d27516..368d63af4c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,9 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 ## [Development]
 <!-- Do Not Erase This Section - Used for tracking unreleased changes -->
 
+### Fixed
+- **Mypy**: Declare UMAP mixin weighted-edge DataFrame attributes for type checking.
+
 ### Tests
 - **Temporal**: Added datetime unit parity coverage (ms/us/ns) for ring layouts, GFQL time ring layouts, and temporal comparison predicates; relaxed honeypot hypergraph datetime unit expectations.
 
diff --git a/graphistry/umap_utils.py b/graphistry/umap_utils.py
index 55aed90332..1289f83790 100644
--- a/graphistry/umap_utils.py
+++ b/graphistry/umap_utils.py
@@ -26,14 +26,18 @@
 
 logger = setup_logger(__name__)
 
+DataFrameLike = Union[pd.DataFrame, Any]
+
 if TYPE_CHECKING:
-    MIXIN_BASE = FeatureMixin
+    class _UMAPMixinBase(FeatureMixin):
+        _weighted_edges_df: Optional[DataFrameLike]
+        _weighted_edges_df_from_nodes: Optional[DataFrameLike]
+        _weighted_edges_df_from_edges: Optional[DataFrameLike]
+
+    MIXIN_BASE = _UMAPMixinBase
 else:
     MIXIN_BASE = object
 
-
-DataFrameLike = Union[pd.DataFrame, Any]
-
 # Error message for empty feature matrix
 _EMPTY_FEATURES_ERROR_MSG = (
     "UMAP requires at least one numeric feature column, but received empty feature matrix. "
@@ -1134,3 +1138,4 @@ def filter_weighted_edges(
 
         if not inplace:
             return res
+