diff --git a/.circleci/config.yml b/.circleci/config.yml
deleted file mode 100644
index 066521b3..00000000
--- a/.circleci/config.yml
+++ /dev/null
@@ -1,36 +0,0 @@
----
-# This project has switched to GitHub actions.
-# Circle CI is not disabled repository-wise so that previous pull requests
-# continue working.
-# This file does not generate any CircleCI workflow.
-
-version: 2.1
-
-executors:
-
-  golang:
-    docker:
-      - image: busybox
-
-jobs:
-  noopjob:
-    executor: golang
-
-    steps:
-      - run:
-          command: "true"
-
-
-workflows:
-  version: 2
-  elasticsearch_exporter:
-    jobs:
-      - noopjob
-    triggers:
-      - schedule:
-          cron: "0 0 30 2 *"
-          filters:
-            branches:
-              only:
-                - main
-                - master
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7038ffc5..273fdccc 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,7 +11,7 @@ jobs:
     container:
       # Whenever the Go version is updated here, .promu.yml
       # should also be updated.
-      image: quay.io/prometheus/golang-builder:1.23-base
+      image: quay.io/prometheus/golang-builder:1.25-base
     steps:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - uses: prometheus/promci@443c7fc2397e946bc9f5029e313a9c3441b9b86d # v0.4.7
diff --git a/.github/workflows/mixin.yml b/.github/workflows/mixin.yml
index 93acad5f..aa973b0b 100644
--- a/.github/workflows/mixin.yml
+++ b/.github/workflows/mixin.yml
@@ -15,7 +15,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@44694675825211faa026b3c33043df3e48a5fa00 # v6.0.0
         with:
-          go-version: 1.23.x
+          go-version: 1.25.x
       - name: Install dependencies
         run: |
           go install github.com/google/go-jsonnet/cmd/jsonnet@v0.20.0
diff --git a/.promu.yml b/.promu.yml
index b53c4f24..12606999 100644
--- a/.promu.yml
+++ b/.promu.yml
@@ -1,7 +1,7 @@
 go:
     # Whenever the Go version is updated here,
     # .github/workflows should also be updated.
-    version: 1.23
+    version: 1.25
 repository:
     path: github.com/prometheus-community/elasticsearch_exporter
 build:
diff --git a/go.mod b/go.mod
index b0d8286c..dfcd226a 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/prometheus-community/elasticsearch_exporter
 
-go 1.24.1
+go 1.24.0
 
 require (
 	github.com/alecthomas/kingpin/v2 v2.4.0