diff --git a/.circleci/config.yml b/.circleci/config.yml
index 1540f31..fa6b825 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -8,7 +8,7 @@ executors:
   # Whenever the Go version is updated here, .promu.yml should also be updated.
   golang:
     docker:
-    - image: circleci/golang:1.14
+    - image: circleci/golang:1.15
 
 jobs:
   test:
diff --git a/.promu.yml b/.promu.yml
index 92b2f45..9eadf0d 100644
--- a/.promu.yml
+++ b/.promu.yml
@@ -1,7 +1,7 @@
 go:
     # Whenever the Go version is updated here, .circle/config.yml should also
     # be updated.
-    version: 1.14
+    version: 1.15
 repository:
     path: github.com/prometheus/statsd_exporter
 build: