diff --git a/.github/workflows/test-extensions.yml b/.github/workflows/test-extensions.yml
index 27ea415..966667c 100644
--- a/.github/workflows/test-extensions.yml
+++ b/.github/workflows/test-extensions.yml
@@ -50,6 +50,7 @@ jobs:
           - alpine3.8
           - alpine3.9
           - alpine3.10
+          - alpine3.11
           - jessie
           - stretch
           - buster