diff --git a/.github/workflows/qa.yml b/.github/workflows/qa.yml
index a9d234e..d63c0fd 100644
--- a/.github/workflows/qa.yml
+++ b/.github/workflows/qa.yml
@@ -45,7 +45,9 @@ jobs:
         uses: ramsey/composer-install@v2
 
       - name: Install xmllint
-        run: sudo apt-get install --no-install-recommends -y libxml2-utils
+        run: |
+          sudo apt-get update
+          sudo apt-get install --no-install-recommends -y libxml2-utils
 
       # Show XML violations inline in the file diff.
       # @link https://github.com/marketplace/actions/xmllint-problem-matcher