diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 54a8e50c801de8b7cce9beff1b8125cf4828a9b3..90400a7311e897fd6461432476724ec140a5df94 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -3,7 +3,7 @@ on:
   - push
   - pull_request
 env:
-  golang-version: '1.13'
+  golang-version: '1.15'
   kind-version: 'v0.9.0'
 jobs:
   generate:
diff --git a/go.mod b/go.mod
index 1c6c40f1d0d1914f54dc826af02a232396b0a9b3..af027cc6e6b7aad35e896e5a9131d3f0cd812b67 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/prometheus-operator/kube-prometheus
 
-go 1.13
+go 1.15
 
 require (
 	github.com/Jeffail/gabs v1.4.0