diff --git a/.github/workflows/build-debian-11.yml b/.github/workflows/build-debian-11.yml
index 50fb4e1..2822c75 100644
--- a/.github/workflows/build-debian-11.yml
+++ b/.github/workflows/build-debian-11.yml
@@ -5,6 +5,8 @@ on: [push]
 jobs:
   debian-11-build:
     runs-on: ubuntu-latest
+    container:
+      image: debian:11
     steps:
       - uses: actions/checkout@v2
         with: