diff --git a/docker/bionic/Dockerfile b/docker/bionic/Dockerfile
index b5e7e0a..53f5c25 100644
--- a/docker/bionic/Dockerfile
+++ b/docker/bionic/Dockerfile
@@ -18,8 +18,7 @@ RUN apt-get -y install sudo
 # travis xenial bionic
 RUN apt-get install -yq --no-install-suggests --no-install-recommends \
     python-setuptools libssl-dev libpq-dev python-prctl python-dev \
-    python-dev python-virtualenv python-pip virtualenv \
-    shutil
+    python-dev python-virtualenv python-pip virtualenv
 
 # travis focal
 RUN apt-get install -yq --no-install-suggests --no-install-recommends \