diff --git a/docker/Dockerfile.build.script b/docker/Dockerfile.build.script
index fd4735d..e5b0bc8 100644
--- a/docker/Dockerfile.build.script
+++ b/docker/Dockerfile.build.script
@@ -1,4 +1,4 @@
-FROM ubuntu:bionic
+FROM ubuntu:18.04
 
 USER root