diff --git a/caddy2/php7.4-debian/Dockerfile b/caddy2/php7.4-debian/Dockerfile
index e725699..ab5c81e 100644
--- a/caddy2/php7.4-debian/Dockerfile
+++ b/caddy2/php7.4-debian/Dockerfile
@@ -3,7 +3,7 @@ FROM caddy:2.2.1 as caddy
 FROM php:7.4-fpm
 
 RUN apt-get update
-RUN apt-get install -y autoconf zlib1g-dev
+RUN apt-get install -y autoconf zlib1g-dev libcurl4-openssl-dev pkg-config libssl-dev
 RUN pecl install grpc
 RUN docker-php-ext-enable grpc