diff --git a/environment-dev-linux.yml b/environment-dev-linux.yml
index e0887fa39f..1b8258a0a4 100644
--- a/environment-dev-linux.yml
+++ b/environment-dev-linux.yml
@@ -19,7 +19,7 @@ dependencies:
         - llvm-openmp
         - matplotlib
         - netcdf4
-        - numpy
+        - numpy<2.5
         - pkg-config
         - pytest
         - python-build
diff --git a/environment-dev-mac.yml b/environment-dev-mac.yml
index 04f7592621..19b7101f79 100644
--- a/environment-dev-mac.yml
+++ b/environment-dev-mac.yml
@@ -14,7 +14,7 @@ dependencies:
         - llvm-openmp
         - matplotlib
         - netcdf4
-        - numpy
+        - numpy<2.5
         - pkg-config
         - pytest
         - python-build