diff --git a/.github/workflows/coverity.yml b/.github/workflows/coverity.yml
index 616f7db..bafc9df 100644
--- a/.github/workflows/coverity.yml
+++ b/.github/workflows/coverity.yml
@@ -11,7 +11,7 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
 
     env:
       COVERITY_SCAN_TOKEN: ${{ secrets.COVERITY_SCAN_TOKEN }}
@@ -28,6 +28,8 @@ jobs:
 
       - name: Get build dependencies
         run: |
+          # note: debhelper v13 isn't available from ubuntu-20.04 yet, we need a backport
+          sudo apt-add-repository -y ppa:ubuntu-cloud-archive/yoga-staging
           sudo apt-get install -q -y --no-install-recommends git ca-certificates curl
           sudo apt-get build-dep -q -y .