diff --git a/Dockerfile b/Dockerfile
index c0fdb35..a4523f1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM xena/go:1.11.4 AS build
+FROM xena/go:1.12.6 AS build
 RUN apk --no-cache add make git
 RUN mkdir -p /usr/local/src \
  && git clone https://github.com/jroimartin/sw /usr/local/src/sw \