diff --git a/cluster/images/hyperkube/Dockerfile b/cluster/images/hyperkube/Dockerfile
index b52564eb7ef..aecc0c5181f 100644
--- a/cluster/images/hyperkube/Dockerfile
+++ b/cluster/images/hyperkube/Dockerfile
@@ -28,6 +28,7 @@ RUN DEBIAN_FRONTEND=noninteractive apt-get update -y \
     socat \
     curl \
     git \
+    && DEBIAN_FRONTEND=noninteractive apt-get upgrade -y \
     && DEBIAN_FRONTEND=noninteractive apt-get autoremove -y \
     && DEBIAN_FRONTEND=noninteractive apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*