diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index c3d54d8..ef9edba 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -53,6 +53,7 @@ jobs:
         if: matrix.os == 'ubuntu-latest'
         working-directory: ${{ github.workspace }}/example
         run: |
+          sudo apt-get update
           sudo apt-get install -y valgrind
           valgrind \
             --tool=memcheck \