diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2be4f7a..6fa22f0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -26,7 +26,7 @@ jobs:
           path: 'ganto.acme_tiny'
 
       - name: Set up Python 3.
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: '3.x'
 
@@ -58,7 +58,7 @@ jobs:
           path: 'ganto.acme_tiny'
 
       - name: Set up Python 3.
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: '3.x'
 
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 5eb8926..a65eb88 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -28,7 +28,7 @@ jobs:
           path: 'ganto.acme_tiny'
 
       - name: Set up Python 3.
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: '3.x'