diff --git a/.circleci/config.yml b/.circleci/config.yml
index 81bb55e..a27bed8 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -5,7 +5,7 @@ executors:
   # Whenever the Go version is updated here, .promu.yml should also be updated.
   golang:
     docker:
-      - image: cimg/go:1.19
+      - image: cimg/go:1.21
 jobs:
   test:
     executor: golang
diff --git a/.promu.yml b/.promu.yml
index 2bba2bb..0fa4964 100644
--- a/.promu.yml
+++ b/.promu.yml
@@ -1,11 +1,10 @@
 go:
     # Whenever the Go version is updated here, .circle/config.yml should also
     # be updated.
-    version: 1.19
+    version: 1.21
 repository:
     path: github.com/prometheus/statsd_exporter
 build:
-    flags: -a -tags 'netgo static_build'
     ldflags: |
         -X github.com/prometheus/common/version.Version={{.Version}}
         -X github.com/prometheus/common/version.Revision={{.Revision}}
diff --git a/go.mod b/go.mod
index bfb1065..12e4d83 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/prometheus/statsd_exporter
 
-go 1.18
+go 1.20
 
 require (
 	github.com/alecthomas/kingpin/v2 v2.4.0