diff --git a/.github/actions/run-tests/Dockerfile b/.github/actions/run-tests/Dockerfile
index c849027d..22fd823c 100644
--- a/.github/actions/run-tests/Dockerfile
+++ b/.github/actions/run-tests/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.15-alpine
+FROM golang:1.16-alpine
 
 # Add any build or testing essential system packages
 RUN apk add --no-cache build-base git pkgconf
diff --git a/Dockerfile b/Dockerfile
index a8f9704f..0af148a9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # Docker buildkit multi-arch build requires golang alpine
-FROM golang:1.15-alpine as builder
+FROM golang:1.16-alpine as builder
 
 RUN apk add gcc pkgconfig libc-dev
 RUN apk add --no-cache musl~=1.2 libgit2-dev~=1.1
diff --git a/api/go.mod b/api/go.mod
index 6ff88321..f0c2f08c 100644
--- a/api/go.mod
+++ b/api/go.mod
@@ -1,6 +1,6 @@
 module github.com/fluxcd/source-controller/api
 
-go 1.15
+go 1.16
 
 require (
 	github.com/fluxcd/pkg/apis/meta v0.8.0
diff --git a/go.mod b/go.mod
index 52d18006..75a9f325 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/fluxcd/source-controller
 
-go 1.15
+go 1.16
 
 replace github.com/fluxcd/source-controller/api => ./api