diff --git a/.gitea/workflows/develop_build_manual.yaml b/.gitea/workflows/develop_build_manual.yaml
index 728e3e47..142fa42f 100644
--- a/.gitea/workflows/develop_build_manual.yaml
+++ b/.gitea/workflows/develop_build_manual.yaml
@@ -72,7 +72,7 @@ jobs:
         run: |
           echo "===== 生成Dockerfile ====="
           cat > Dockerfile << 'EOF'
-          FROM openjdk:8
+          FROM openjdk:21
           VOLUME /tmp
           RUN ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
           RUN echo 'Asia/Shanghai' > /etc/timezone