diff --git a/Dockerfile.tailscale-HEAD b/Dockerfile.tailscale-HEAD
index 40c0ad8..b62f7e2 100644
--- a/Dockerfile.tailscale-HEAD
+++ b/Dockerfile.tailscale-HEAD
@@ -1,7 +1,7 @@
 FROM golang:latest
 
 RUN apt-get update \
-    && apt-get install -y ca-certificates dnsutils git \
+    && apt-get install -y ca-certificates dnsutils git iptables \
     && rm -rf /var/lib/apt/lists/*