diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 2ee465e..d1c7115 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -61,7 +61,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: install
-        run: apt-get install libatomic1
+        run: |
+          sudo apt-get update
+          sudo apt-get install libatomic1
 
       - uses: actions/checkout@v4