diff --git a/.github/workflows/ci-python-app.yaml b/.github/workflows/ci-python-app.yaml
index 6966ec3..2151138 100644
--- a/.github/workflows/ci-python-app.yaml
+++ b/.github/workflows/ci-python-app.yaml
@@ -61,7 +61,7 @@ jobs:
           python-version: ${{ inputs.python-version }}
 
       - name: Install ruff
-        run: pip install ruff
+        run: pip install 'ruff==0.15.22'
 
       - name: Ruff check
         run: ruff check ${{ inputs.source-dirs }}
diff --git a/.github/workflows/ci-python-sam.yaml b/.github/workflows/ci-python-sam.yaml
index b2a7e4d..95af16e 100644
--- a/.github/workflows/ci-python-sam.yaml
+++ b/.github/workflows/ci-python-sam.yaml
@@ -59,7 +59,7 @@ jobs:
           python-version: ${{ inputs.python-version }}
 
       - name: Install ruff
-        run: pip install ruff
+        run: pip install 'ruff==0.15.22'
 
       - name: Ruff check
         run: ruff check ${{ inputs.source-dirs }}