diff --git a/.github/workflows/build-docset.yml b/.github/workflows/build-docset.yml
index e743630e..31ca0137 100644
--- a/.github/workflows/build-docset.yml
+++ b/.github/workflows/build-docset.yml
@@ -19,7 +19,7 @@ jobs:
       - uses: actions/checkout@v4
         with:
           fetch-depth: 0
-      - uses: actions/setup-python@v4
+      - uses: actions/setup-python@v5
         with:
           python-version: "3.x"
 
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0eaa9cb9..9490e3b7 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -40,7 +40,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v4
+      - uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
           allow-prereleases: true
@@ -81,7 +81,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v4
+      - uses: actions/setup-python@v5
         with:
           python-version-file: .python-version-default
           cache: pip
@@ -116,7 +116,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v4
+      - uses: actions/setup-python@v5
         with:
           # Keep in sync with tox/docs and .readthedocs.yaml.
           python-version: "3.12"
@@ -130,7 +130,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v4
+      - uses: actions/setup-python@v5
         with:
           python-version-file: .python-version-default
           cache: pip
@@ -147,7 +147,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v4
+      - uses: actions/setup-python@v5
         with:
           python-version-file: .python-version-default
           cache: pip