diff --git a/Dockerfile b/Dockerfile
index 8468374..ba6597e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -23,6 +23,10 @@ ENV TZ="Asia/Shanghai"
 RUN rm -f /etc/localtime \
     && ln -sv /usr/share/zoneinfo/Asia/Shanghai /etc/localtime \
     && echo "Asia/Shanghai" > /etc/timezone
+
+# 更新 CA 证书库
+RUN apt-get update && apt-get install -y ca-certificates
+
 # 在build阶段复制可执行的go二进制文件app
 COPY --from=build /go/release/egg ./egg