diff --git a/devtools/conda-envs/ci_env.yaml b/devtools/conda-envs/ci_env.yaml
index 64edd09..1ea3e3c 100644
--- a/devtools/conda-envs/ci_env.yaml
+++ b/devtools/conda-envs/ci_env.yaml
@@ -23,7 +23,7 @@ dependencies:
   - numpydoc
   - gromacs
   - pydantic
-  - ruff
+  - ruff=0.14.13
   - mkl>=2022.1.0
   - loguru
   - pyyaml
diff --git a/devtools/conda-envs/dev_env.yaml b/devtools/conda-envs/dev_env.yaml
index 364874b..096a11c 100644
--- a/devtools/conda-envs/dev_env.yaml
+++ b/devtools/conda-envs/dev_env.yaml
@@ -22,7 +22,7 @@ dependencies:
   - biosimspace>2023.4
   - numpydoc
   - pydantic
-  - ruff
+  - ruff=0.14.13
   - pyyaml
 
     # Testing