diff --git a/.github/workflows/cron.yml b/.github/workflows/cron.yml
index 0df537e..75e1bc7 100644
--- a/.github/workflows/cron.yml
+++ b/.github/workflows/cron.yml
@@ -1023,7 +1023,7 @@ jobs:
     if: github.repository_owner == 'hwdsl2'
     strategy:
       matrix:
-        os_version: ["alpine:3.14"]
+        os_version: ["alpine:3.14", "alpine:3.15"]
       fail-fast: false
     container:
       image: ${{ matrix.os_version }}
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 3d3e1a2..ee1a027 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -1052,7 +1052,7 @@ jobs:
     if: github.repository_owner == 'hwdsl2'
     strategy:
       matrix:
-        os_version: ["alpine:3.14"]
+        os_version: ["alpine:3.14", "alpine:3.15"]
       fail-fast: false
     container:
       image: ${{ matrix.os_version }}