Upper pin is also needed in pre-commit config, apparently.

Author: samcunliffe

.pre-commit-config.yaml

@@ -19,12 +19,12 @@ repos:
   - repo: https://github.com/pre-commit/mirrors-mypy
     rev: v1.19.1
     hooks:
-     - id: mypy
-       additional_dependencies: [numpy, matplotlib]
+      - id: mypy
+        additional_dependencies: [numpy<2.4, matplotlib]
 
   - repo: https://github.com/astral-sh/ruff-pre-commit
     # Ruff version.
-    rev: 'v0.14.10'
+    rev: "v0.14.10"
     hooks:
       - id: ruff