diff --git a/.github/renovate.json5 b/.github/renovate.json5
index 7d83ca5..9ea41db 100644
--- a/.github/renovate.json5
+++ b/.github/renovate.json5
@@ -6,4 +6,14 @@
     ":semanticCommits",
   ],
   rebaseWhen: "behind-base-branch",
+  customManagers: [
+    {
+      customType: "regex",
+      description: "Update _version ARGs and ENVs in Earthfile",
+      managerFilePatterns: ["/^Earthfile$/"],
+      matchStrings: [
+        "# renovate: datasource=(?<datasource>[a-z-]+?)(?: depName=(?<depName>.+?))? packageName=(?<packageName>.+?)(?: versioning=(?<versioning>[a-z-]+?))?\\s+(?:ENV|ARG) .+?\\_version=(?<currentValue>.+?)\\s",
+      ],
+    },
+  ],
 }
diff --git a/.github/workflows/ci.yaml b/.github/workflows/check.yaml
similarity index 84%
rename from .github/workflows/ci.yaml
rename to .github/workflows/check.yaml
index 60583ec..e808c4c 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/check.yaml
@@ -1,4 +1,4 @@
-name: CI
+name: Check
 
 on:
   push:
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-24.04-arm
     strategy:
       matrix:
-        go-version: ["1.23", "1.24", "1.25rc2"]
+        go-version: ["1.23", "1.24", "1.25"]
       fail-fast: false
     env:
       FORCE_COLOR: 1
@@ -21,7 +21,7 @@ jobs:
       - name: Go ${{ matrix.go-version }}
         run: echo "golang_version=${{ matrix.go-version }}" > .arg
       - name: Generate cldr.go
-        if: ${{ matrix.go-version == '1.24' }}
+        if: ${{ matrix.go-version == '1.25' }}
         run: |
           earthly --strict +generate
           if ! git diff --quiet internal/cldr/data.go; then
@@ -30,7 +30,7 @@ jobs:
             exit 1
           fi
       - name: Lint
-        if: ${{ matrix.go-version == '1.24' }}
+        if: ${{ matrix.go-version == '1.25' }}
         run: earthly --ci +lint
       - name: Test Unit
         run: earthly --ci +test
diff --git a/Earthfile b/Earthfile
index 269772d..1cfb0be 100644
--- a/Earthfile
+++ b/Earthfile
@@ -1,6 +1,7 @@
 VERSION 0.8
-ARG go_version=1.24.5
-FROM golang:$go_version-alpine3.22
+# renovate: datasource=docker packageName=golang
+ARG go_version=1.24.5-alpine3.22
+FROM golang:$go_version
 WORKDIR /intl
 
 # init prepares the project for local development
@@ -21,8 +22,12 @@ cldr:
 
 # testdata generates test cases and saves to tests.json
 testdata:
+  # renovate: datasource=docker packageName=node
   ARG node_version=23.11.0
   FROM node:$node_version-alpine
+  # renovate: datasource=npm packageName=npm
+  ARG npm_version=9.6.1
+  RUN npm i -g npm@$npm_version
   WORKDIR /intl
   COPY testdata.js .
   COPY --dir +cldr/cldr/common/main .cldr/common/main
@@ -64,6 +69,7 @@ test:
 
 # lint runs all linters for golang
 lint:
+  # renovate: datasource=docker packageName=golangci-lint
   ARG golangci_lint_version=2.3.0
   FROM golangci/golangci-lint:v$golangci_lint_version-alpine
   WORKDIR /intl