diff --git a/.circleci/config.yml b/.circleci/config.yml
index d2a8200f..6dea230d 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -12,7 +12,7 @@ jobs:
             shellcheck -x tag.sh
   build:
     docker:
-      - image: golang:1.11.1-alpine3.8
+      - image: golang:1.11.5-alpine3.9
     working_directory: /go/src/github.com/helm/chart-testing
     steps:
       - setup_remote_docker
diff --git a/Dockerfile b/Dockerfile
index edb348fe..0e570c5e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.8
+FROM alpine:3.9
 
 RUN apk --no-cache add \
     curl \