diff --git a/docker/ubuntu-ci/Dockerfile b/docker/ubuntu-ci/Dockerfile
index 0bfcb51878..57af69c2ff 100644
--- a/docker/ubuntu-ci/Dockerfile
+++ b/docker/ubuntu-ci/Dockerfile
@@ -33,6 +33,7 @@ RUN apt update && apt upgrade -y && \
             screen \
             texinfo \
             tmux \
+            iptables \
     && \
     # Protobuf build requirements
     apt-get install -y \