diff --git a/cluster/images/hyperkube/Dockerfile b/cluster/images/hyperkube/Dockerfile
index f0f535ca0d1..8ea5bb63da8 100644
--- a/cluster/images/hyperkube/Dockerfile
+++ b/cluster/images/hyperkube/Dockerfile
@@ -7,6 +7,7 @@ RUN DEBIAN_FRONTEND=noninteractive apt-get update -y \
     ca-certificates \
     file \
     util-linux \
+    socat \
     && DEBIAN_FRONTEND=noninteractive apt-get autoremove -y \
     && DEBIAN_FRONTEND=noninteractive apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*