diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 32775b8..8d15160 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -6,7 +6,7 @@ default_language_version:
 
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v4.0.1
+    rev: v4.4.0
     hooks:
       - id: trailing-whitespace
       - id: end-of-file-fixer
@@ -15,6 +15,6 @@ repos:
       - id: check-added-large-files
 
   - repo: https://github.com/psf/black
-    rev: 21.9b0
+    rev: 23.1.0
     hooks:
       - id: black
diff --git a/environment.yml b/environment.yml
index af7443e..8e61232 100644
--- a/environment.yml
+++ b/environment.yml
@@ -1,9 +1,7 @@
-name: python
-
-channels:
-  - defaults
+name: db12
 
 dependencies:
+  - python =3.9
   - future
   - mock
   - pre-commit