diff --git a/.github/workflows/ci-tests.yaml b/.github/workflows/ci-tests.yaml
index 97c9f112..6ae43a9d 100644
--- a/.github/workflows/ci-tests.yaml
+++ b/.github/workflows/ci-tests.yaml
@@ -18,7 +18,7 @@ jobs:
       - name: Setup Golang
         uses: actions/setup-go@v1
         with:
-          go-version: '1.14.4'
+          go-version: '1.16.5'
       - name: Download all Go modules
         run: |
           go mod download
@@ -68,7 +68,7 @@ jobs:
       - name: Setup Golang
         uses: actions/setup-go@v1
         with:
-          go-version: '1.14.4'
+          go-version: '1.16.5'
       - name: Run tests
         env:
           GNUPG_DISABLED: true
diff --git a/Dockerfile b/Dockerfile
index e3a51fe5..8bd1d9e4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.14.13 AS builder
+FROM golang:1.16.5 AS builder
 
 RUN mkdir -p /src/argocd-image-updater
 WORKDIR /src/argocd-image-updater
diff --git a/go.mod b/go.mod
index 36bb962f..e741e612 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/argoproj-labs/argocd-image-updater
 
-go 1.14
+go 1.16
 
 require (
 	github.com/Masterminds/semver v1.5.0
diff --git a/go.sum b/go.sum
index bc7d46f6..978cd027 100644
--- a/go.sum
+++ b/go.sum
@@ -163,10 +163,8 @@ github.com/fatih/color v1.6.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5Kwzbycv
 github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
 github.com/fatih/color v1.9.0/go.mod h1:eQcE1qtQxscV5RaZvpXrrb8Drkc3/DdQ+uUYCNjL+zU=
 github.com/felixge/httpsnoop v1.0.1/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSwevea8zH2U=
-github.com/flynn/go-shlex v0.0.0-20150515145356-3f9db97f8568 h1:BHsljHzVlRcyQhjrss6TZTdY2VfCqZPbv5k3iBFa2ZQ=
 github.com/flynn/go-shlex v0.0.0-20150515145356-3f9db97f8568/go.mod h1:xEzjJPgXI435gkrCt3MPfRiAkVrwSbHsst4LCFVfpJc=
 github.com/fogleman/gg v1.2.1-0.20190220221249-0403632d5b90/go.mod h1:R/bRT+9gY/C5z7JzPU0zXsXHKM4/ayA+zqcVNZzPa1k=
-github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/ghodss/yaml v0.0.0-20150909031657-73d445a93680/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
 github.com/ghodss/yaml v1.0.0 h1:wQHKEahhL6wmXdzwWG11gIVCkOv05bNOh+Rxn0yngAk=