diff --git a/env/dev_environment.yml b/env/dev_environment.yml
index 30e08203..64280c25 100644
--- a/env/dev_environment.yml
+++ b/env/dev_environment.yml
@@ -6,9 +6,9 @@ dependencies:
   - blas=*=mkl
   - ca-certificates
   - certifi
-  - clang-format=18
-  - clang-tools=18
-  - clang=18
+  - clang-format-18
+  - clang-tools=21
+  - clang-18
   - cmake
   - cuda-command-line-tools
   - cuda-compiler