diff --git a/docker/network_automation/Dockerfile b/docker/network_automation/Dockerfile
index c7849e1..546133f 100644
--- a/docker/network_automation/Dockerfile
+++ b/docker/network_automation/Dockerfile
@@ -3,7 +3,7 @@
 FROM ubuntu:xenial
 
 RUN DEBIAN_FRONTEND=noninteractive apt-get update && apt-get -y --no-install-recommends install \
-    telnet curl openssh-client nano vim-tiny iputils-ping python build-essential libssl-dev libffi-de \
+    telnet curl openssh-client nano vim-tiny iputils-ping python build-essential libssl-dev libffi-dev \
     python-pip ansible \
     && rm -rf /var/lib/apt/lists/* \
     && pip install cryptography netmiko napalm pyntc