diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index fae0cad..ea712e5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -60,7 +60,7 @@ jobs:
           - fedora:41
           - fedora:40
           - opensuse/leap:15
-          - alpine:3.20
+          - alpine:3.21
 
     container:
       image: ${{ matrix.container }}
diff --git a/.github/workflows/linux-ci-helper.sh b/.github/workflows/linux-ci-helper.sh
index 1034877..b64a8fa 100755
--- a/.github/workflows/linux-ci-helper.sh
+++ b/.github/workflows/linux-ci-helper.sh
@@ -198,7 +198,7 @@ elif [ "${CONTAINER_FULLNAME}" = "opensuse/leap:15" ]; then
     INSTALL_CHECKER_PKGS="cppcheck ShellCheck"
     INSTALL_CHECKER_PKG_OPTIONS=""
 
-elif [ "${CONTAINER_FULLNAME}" = "alpine:3.20" ]; then
+elif [ "${CONTAINER_FULLNAME}" = "alpine:3.21" ]; then
     PACKAGE_MANAGER_BIN="apk"
     PACKAGE_UPDATE_OPTIONS="update --no-progress"
     PACKAGE_INSTALL_OPTIONS="add --no-progress --no-cache"