diff --git a/docker/apache/Dockerfile b/docker/apache/Dockerfile
index 24580e8..a33f218 100644
--- a/docker/apache/Dockerfile
+++ b/docker/apache/Dockerfile
@@ -26,7 +26,8 @@ RUN docker-php-ext-install \
     pdo_mysql \
     mysqli \
     pdo \
-    pdo_pgsql
+    pdo_pgsql \
+    pgsql 
 
 # 2. set up document root for apache
 COPY docker/apache/000-default.conf /etc/apache2/sites-available/000-default.conf