diff --git a/Dockerfile b/Dockerfile
index a6c7fff..336be9d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.12.5-alpine3.9 as build
+FROM golang:1.16.15-alpine3.15 as build
 
 # git is not included, weirdly, so nothing with ext deps can build
 RUN apk add git
diff --git a/go.mod b/go.mod
index 6d6449e..001c922 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/kbase/blobstore
 
-go 1.12
+go 1.16
 
 require (
 	github.com/aws/aws-sdk-go v1.19.21