diff --git a/.github/workflows/ubuntu.yml b/.github/workflows/ubuntu.yml
index ebdf95352..02ddf72a3 100644
--- a/.github/workflows/ubuntu.yml
+++ b/.github/workflows/ubuntu.yml
@@ -138,7 +138,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        compiler: ['3.5', '3.6', '3.7', '3.8', '3.9', '4', '5', '6', '7', '8', '9', '10', '11', '12', '13', '14', 'latest']
+        compiler: ['3.5', '3.6', '3.7', '3.8', '3.9', '4', '5', '6', '7', '8', '9', '10', '11', '12', '13', '14', '15-bullseye', 'latest']
     container: silkeh/clang:${{ matrix.compiler }}
     steps:
       - name: Install unzip