diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1d10e30..c6cf25b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,7 +10,7 @@ jobs:
         python-version: ["3.9", "3.10", "3.11", "3.12"]
       fail-fast: false
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v4
         with:
           submodules: recursive