diff --git a/devtools/ci/environment.yml b/devtools/ci/environment.yml
index 26d34c473d..854dad7b18 100644
--- a/devtools/ci/environment.yml
+++ b/devtools/ci/environment.yml
@@ -3,7 +3,7 @@ channels:
 dependencies:
     - python=3.10
     - pyflakes
-    - numpy
+    - numpy=2.0.0
     - cython=0.29.36
     - setuptools
     - pytest