diff --git a/Dockerfile b/Dockerfile
index 738620a7ad..1636254c6f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -13,6 +13,7 @@ RUN set -ex; \
 		libjpeg-dev \
 		libpng-dev \
 		libzip-dev \
+		libldap-common \
 		libldap2-dev \
 		libicu-dev \
 		unzip \
@@ -43,7 +44,7 @@ RUN set -ex; \
 	; \
 	\
 	apt-mark auto '.*' > /dev/null; \
-	apt-mark manual $savedAptMark; \
+	apt-mark manual $savedAptMark libldap-common; \
 	ldd "$(php -r 'echo ini_get("extension_dir");')"/*.so \
 		| awk '/=>/ { print $3 }' \
 		| sort -u \