diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 22dae4e..980b68d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Set up Git repository
-        uses: actions/checkout@latest
+        uses: actions/checkout@v4
 
       - name: Compile LaTeX document (PdfLaTeX)
         uses: dante-ev/latex-action@latest