diff --git a/Dockerfile b/Dockerfile
index bc8b0a9..10adad5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -9,6 +9,7 @@ RUN apt-get update && apt-get install -y \
 	perl \
 	libcgi-pm-perl \
 	libldap2-dev \
+	&& docker-php-ext-install ldap \
 	&& rm -rf /var/lib/apt/lists/*
 
 RUN docker-php-ext-install ldap