diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index fc9b0de2a..e7be59a26 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -3,7 +3,7 @@ on:
   - push
   - pull_request
 env:
-  golang-version: '1.14'
+  golang-version: '1.15'
   kind-version: 'v0.8.1'
   kind-image: 'kindest/node:v1.18.8'  # Image defines which k8s version is used
 jobs:
diff --git a/go.mod b/go.mod
index 4a25b5e48..90990518c 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/prometheus-operator/prometheus-operator
 
-go 1.14
+go 1.15
 
 require (
 	github.com/blang/semver v3.5.1+incompatible
diff --git a/scripts/go.mod b/scripts/go.mod
index 21b06f1d0..08b913674 100644
--- a/scripts/go.mod
+++ b/scripts/go.mod
@@ -1,6 +1,6 @@
 module github.com/prometheus-operator/prometheus-operator/tooling
 
-go 1.14
+go 1.15
 
 require (
 	github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751 // indirect