diff --git a/Dockerfile b/Dockerfile
index 47a6dc9..4fb091a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -14,7 +14,7 @@ ENV LC_ALL en_US.UTF-8
 RUN update-locale LANG=en_US.UTF-8
 RUN apt-get -y install postgresql-9.3 postgresql-contrib-9.3 postgresql-9.3-postgis-2.1 postgis
 RUN echo "host    all             all             0.0.0.0/0               md5" >> /etc/postgresql/9.3/main/pg_hba.conf
-RUN service postgresql start && /bin/su postgres -c "createuser -d -s -r -l docker" && /bin/su postgres -c "psql postgres -c \"ALTER USER docker WITH ENCRYPTED PASSWORD 'docker'\"" && service postgresql stop
+RUN service postgresql start && /bin/su postgres -c "createuser -d -s -r -l docker" && /bin/su postgres -c "psql postgres -c \"ALTER USER docker WITH ENCRYPTED PASSWORD 'docker'\"" && /bin/su postgres -c "psql postgres -c \"create extension postgis\"" && service postgresql stop
 RUN echo "listen_addresses = '*'" >> /etc/postgresql/9.3/main/postgresql.conf
 RUN echo "port = 5432" >> /etc/postgresql/9.3/main/postgresql.conf
 
diff --git a/README.md b/README.md
index cd4e2e0..1784b55 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@ This Dockerfile creates a container running PostGIS 2.1 in PostgreSQL 9.3
 - expose port `5432`
 - initializes a database in `/var/lib/postgresql/9.3/main`
 - superuser in the database: `docker/docker`
-
+- comes with postgis extension installed
 
 ## Install