diff --git a/.github/workflows/test_set_1.yml b/.github/workflows/test_set_1.yml
index 882a840..3a367ca 100644
--- a/.github/workflows/test_set_1.yml
+++ b/.github/workflows/test_set_1.yml
@@ -17,7 +17,7 @@ jobs:
     if: github.repository_owner == 'hwdsl2'
     strategy:
       matrix:
-        os_version: ["centos:8s", "centos:7", "rockylinux:9", "rockylinux:8", "almalinux:9", "almalinux:8", "amazonlinux:2", "oraclelinux:9", "oraclelinux:8", "oraclelinux:7"]
+        os_version: ["centos:9s", "centos:8s", "centos:7", "rockylinux:9", "rockylinux:8", "almalinux:9", "almalinux:8", "amazonlinux:2", "oraclelinux:9", "oraclelinux:8", "oraclelinux:7"]
       fail-fast: false
     env:
       OS_VERSION: ${{ matrix.os_version }}
@@ -535,7 +535,9 @@ jobs:
           exit 0
           EOF
 
-          if [ "$OS_VERSION" = "centos:8s" ]; then
+          if [ "$OS_VERSION" = "centos:9s" ]; then
+            echo "FROM quay.io/centos/centos:stream9" > Dockerfile
+          elif [ "$OS_VERSION" = "centos:8s" ]; then
             echo "FROM quay.io/centos/centos:stream8" > Dockerfile
           else
             echo "FROM $OS_VERSION" > Dockerfile
@@ -547,6 +549,13 @@ jobs:
           WORKDIR /opt/src
 
           RUN if command -v amazon-linux-extras; then amazon-linux-extras install -y kernel-ng; fi
+          EOF
+
+          if [ "$OS_VERSION" = "centos:9s" ]; then
+            echo "RUN yum -y -q install systemd" >> Dockerfile
+          fi
+
+          cat >> Dockerfile <<'EOF'
 
           RUN (cd /lib/systemd/system/sysinit.target.wants/; for i in *; do [ "$i" = \
           systemd-tmpfiles-setup.service ] || rm -f "$i"; done); \