diff --git a/.changeset/light-tomatoes-try.md b/.changeset/light-tomatoes-try.md
new file mode 100644
index 000000000..8d1acea9f
--- /dev/null
+++ b/.changeset/light-tomatoes-try.md
@@ -0,0 +1,5 @@
+---
+'skuba': patch
+---
+
+**configure:** Format Renovate config
diff --git a/src/cli/configure/modules/renovate.test.ts b/src/cli/configure/modules/renovate.test.ts
index 1bb62573d..8ad689cff 100644
--- a/src/cli/configure/modules/renovate.test.ts
+++ b/src/cli/configure/modules/renovate.test.ts
@@ -88,8 +88,10 @@ describe('renovateModule', () => {
 
   it('preserves extended config', async () => {
     const inputFiles = {
-      '.github/renovate.json5':
-        '{"extends": ["github>seek-oss/rynovate:non-critical"], "ignorePaths": []}',
+      '.github/renovate.json5': `{
+    "extends": ["github>seek-oss/rynovate:non-critical"],
+    "ignorePaths": []
+}`,
     };
 
     const outputFiles = await executeModule(
@@ -98,9 +100,11 @@ describe('renovateModule', () => {
       defaultOpts,
     );
 
-    expect(outputFiles['.github/renovate.json5']).toBe(
-      inputFiles['.github/renovate.json5'],
-    );
+    expect(outputFiles['.github/renovate.json5']).toBe(`{
+  extends: ['github>seek-oss/rynovate:non-critical'],
+  ignorePaths: [],
+}
+`);
   });
 
   it('migrates extended config', async () => {
@@ -115,7 +119,7 @@ describe('renovateModule', () => {
     );
 
     expect(outputFiles['.github/renovate.json5']).toBe(
-      inputFiles['renovate.json'],
+      "{ extends: ['seek'] }\n",
     );
 
     expect(outputFiles['renovate.json']).toBeUndefined();
diff --git a/src/cli/configure/modules/renovate.ts b/src/cli/configure/modules/renovate.ts
index 38a9f18e4..83b9dd5a1 100644
--- a/src/cli/configure/modules/renovate.ts
+++ b/src/cli/configure/modules/renovate.ts
@@ -1,3 +1,5 @@
+import prettier from 'prettier';
+
 import { readBaseTemplateFile } from '../../../utils/template';
 import { deleteFiles } from '../processing/deleteFiles';
 import { withPackage } from '../processing/package';
@@ -26,7 +28,14 @@ export const renovateModule = async ({ type }: Options): Promise<Module> => {
       ]);
 
       // allow customised Renovate configs that extend a SEEK configuration
-      return inputFile?.includes('seek') ? inputFile : configFile;
+      return inputFile?.includes('seek')
+        ? prettier.format(inputFile, {
+            parser: 'json5',
+            singleQuote: true,
+            tabWidth: 2,
+            trailingComma: 'all',
+          })
+        : configFile;
     },
 
     /**