diff --git a/main.go b/main.go
index 8a7647f..063fa2d 100644
--- a/main.go
+++ b/main.go
@@ -104,6 +104,11 @@ func main() {
 	// todo: add this to forgepb
 	me.startRepo = me.forge.FindWorkingDirRepo()
 
+	if _, count, _, err := me.forge.IsEverythingOnMaster(); err != nil {
+		log.Info("not everything is on the master branch (", count, "repos)")
+		os.Exit(-1)
+	}
+
 	if me.startRepo == nil {
 		pwd, _ := os.Getwd()
 		msg := fmt.Sprint("Can not run if pwd is not a repo", pwd)