diff --git a/9.1/apache/Dockerfile b/9.1/apache/Dockerfile
index 1849edb..374a39b 100644
--- a/9.1/apache/Dockerfile
+++ b/9.1/apache/Dockerfile
@@ -12,6 +12,7 @@ RUN apt-get update && apt-get install -y \
 	libpng12-dev \
 	libpq-dev \
 	libxml2-dev \
+	smbclient \
 	&& rm -rf /var/lib/apt/lists/*
 
 # https://doc.owncloud.org/server/8.1/admin_manual/installation/source_installation.html#prerequisites
diff --git a/9.1/fpm/Dockerfile b/9.1/fpm/Dockerfile
index 4c071b9..8f14095 100644
--- a/9.1/fpm/Dockerfile
+++ b/9.1/fpm/Dockerfile
@@ -12,6 +12,7 @@ RUN apt-get update && apt-get install -y \
 	libpng12-dev \
 	libpq-dev \
 	libxml2-dev \
+	smbclient \
 	&& rm -rf /var/lib/apt/lists/*
 
 # https://doc.owncloud.org/server/8.1/admin_manual/installation/source_installation.html#prerequisites