diff --git a/Dockerfile b/Dockerfile
index 4cc3ac6..9a6fbad 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -35,7 +35,7 @@ RUN set -eux; \
         libz-dev; \
     \
     # 安装构建依赖 (仅编译时使用)
-    apt install -y --no-install-recommends php8.4-dev build-essential php-pear; \
+    apt install -y --no-install-recommends php8.4-dev build-essential php-pear libgmp-dev; \
     \
     # 安装 PECL 扩展
     pecl channel-update pecl.php.net; \