diff --git a/.ci_support/environment-openmpi.yml b/.ci_support/environment-openmpi.yml
index a1e8bcf7..3d26ba9c 100644
--- a/.ci_support/environment-openmpi.yml
+++ b/.ci_support/environment-openmpi.yml
@@ -3,7 +3,7 @@ channels:
 dependencies:
 - python
 - numpy
-- openmpi
+- openmpi =4.1.6
 - cloudpickle =3.0.0
 - mpi4py =3.1.6
 - tqdm =4.66.4
diff --git a/.github/workflows/notebooks.yml b/.github/workflows/notebooks.yml
index c1132c72..302a14bf 100644
--- a/.github/workflows/notebooks.yml
+++ b/.github/workflows/notebooks.yml
@@ -35,4 +35,4 @@ jobs:
         shell: bash -l {0}
         run: >
           flux start
-          papermill notebooks/examples.ipynb examples-out.ipynb -k "python3"
\ No newline at end of file
+          papermill notebooks/examples.ipynb examples-out.ipynb -k "python3"
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index ac6a1f7a..8fb2656f 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,6 +1,6 @@
 repos:
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.4.4
+    rev: v0.4.5
     hooks:
       - id: ruff
         name: ruff lint
diff --git a/binder/environment.yml b/binder/environment.yml
index c36df88c..3855433b 100644
--- a/binder/environment.yml
+++ b/binder/environment.yml
@@ -3,7 +3,7 @@ channels:
 dependencies:
 - python
 - numpy
-- openmpi
+- openmpi =4.1.6
 - cloudpickle =3.0.0
 - mpi4py =3.1.6
 - tqdm =4.66.2
diff --git a/binder/kernel.json b/binder/kernel.json
index 16c69cf5..7bdeb704 100644
--- a/binder/kernel.json
+++ b/binder/kernel.json
@@ -13,4 +13,4 @@
  "metadata": {
   "debugger": true
  }
-}
\ No newline at end of file
+}