diff --git a/.github/workflows/test_set_2.yml b/.github/workflows/test_set_2.yml
index d7bb217..d70d0ab 100644
--- a/.github/workflows/test_set_2.yml
+++ b/.github/workflows/test_set_2.yml
@@ -17,7 +17,7 @@ jobs:
     if: github.repository_owner == 'hwdsl2'
     strategy:
       matrix:
-        os_version: ["ubuntu:24.04", "ubuntu:22.04", "ubuntu:20.04", "debian:12", "debian:11", "alpine:3.20", "alpine:3.19"]
+        os_version: ["ubuntu:24.04", "ubuntu:22.04", "ubuntu:20.04", "debian:12", "debian:11", "alpine:3.21", "alpine:3.20"]
       fail-fast: false
     container:
       image: ${{ matrix.os_version }}