diff --git a/bionic/build/Dockerfile b/bionic/build/Dockerfile
index 859415a..cd02c88 100644
--- a/bionic/build/Dockerfile
+++ b/bionic/build/Dockerfile
@@ -1,5 +1,5 @@
 ARG base_image
-ARG go_version
+ARG go_version=1.12
 
 FROM golang:$go_version as helpers