diff --git a/vendor/github.com/google/gopacket/.travis.gofmt.sh b/vendor/github.com/google/gopacket/.travis.gofmt.sh
new file mode 100644
index 0000000..e341a1c
--- /dev/null
+++ b/vendor/github.com/google/gopacket/.travis.gofmt.sh
@@ -0,0 +1,7 @@
+#!/bin/bash
+
+cd "$(dirname $0)"
+if [ -n "$(go fmt ./...)" ]; then
+  echo "Go code is not formatted, run 'go fmt github.com/google/stenographer/...'" >&2
+  exit 1
+fi