diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 6d8531a..0327d1e 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938  # v4.2.0
+      - uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871  # v4.2.1
         with:
           fetch-depth: 0 # full history for setuptools_scm
 
@@ -32,7 +32,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938  # v4.2.0
+      - uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871  # v4.2.1
         with:
           fetch-depth: 0 # full history for setuptools_scm
 
@@ -64,7 +64,7 @@ jobs:
         python-version: ['3.10', '3.11', '3.12', '3.13']
 
     steps:
-      - uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938  # v4.2.0
+      - uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871  # v4.2.1
         with:
           fetch-depth: 0 # full history for setuptools_scm