diff --git a/Dockerfile b/Dockerfile
index 5c9b113..ced81d7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,7 +5,7 @@ ENV PG_VERSION 9.4
 RUN wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | apt-key add - \
  && echo 'deb http://apt.postgresql.org/pub/repos/apt/ trusty-pgdg main' > /etc/apt/sources.list.d/pgdg.list \
  && apt-get update \
- && apt-get install -y postgresql-${PG_VERSION} postgresql-client-${PG_VERSION} postgresql-contrib-${PG_VERSION} pwgen \
+ && apt-get install -y postgresql-${PG_VERSION} postgresql-client-${PG_VERSION} postgresql-contrib-${PG_VERSION} \
  && rm -rf /var/lib/postgresql \
  && rm -rf /var/lib/apt/lists/* # 20150323