diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 3f73f27..5c06ff6 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -11,6 +11,7 @@ jobs:
       matrix:
         include:
         # TODO: arm64
+        - openresty: "1.21.4.1"
         - openresty: "1.21.4.3"
         - openresty: "1.25.3.1"