diff --git a/.circleci/config.yml b/.circleci/config.yml
index 683668b3..6ca07209 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -67,7 +67,7 @@ jobs:
   test:
     working_directory: /home/circleci/go/src/github.com/grafana/carbon-relay-ng
     docker:
-      - image: cimg/go:1.20.5
+      - image: cimg/go:1.21.8
     steps:
       - checkout
       - run: make test
@@ -75,7 +75,7 @@ jobs:
   build:
     working_directory: /home/circleci/go/src/github.com/grafana/carbon-relay-ng
     docker:
-      - image: cimg/go:1.20.5
+      - image: cimg/go:1.21.8
     steps:
       - checkout
       - run: go install github.com/go-bindata/go-bindata/...@latest
@@ -166,7 +166,7 @@ jobs:
 
   github_binaries:
       docker:
-        - image: cimg/go:1.20.5
+        - image: cimg/go:1.21.8
       steps:
         - checkout
         - run: curl -sfL https://goreleaser.com/static/run | bash
diff --git a/go.mod b/go.mod
index 708ad27a..3471214f 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/grafana/carbon-relay-ng
 
-go 1.20
+go 1.21
 
 require (
 	cloud.google.com/go v0.18.1-0.20180119164648-b1067c1d21b5