diff --git a/lib/modules/datasource/conan/index.ts b/lib/modules/datasource/conan/index.ts
index ac22536453e572f367ac5512766c225c3c1fd4d0..66a479686e7a1c0dc79717846e09c914e688a44f 100644
--- a/lib/modules/datasource/conan/index.ts
+++ b/lib/modules/datasource/conan/index.ts
@@ -38,7 +38,7 @@ export class ConanDatasource extends Datasource {
     }
     const url = `https://api.github.com/repos/conan-io/conan-center-index/contents/recipes/${depName}/config.yml`;
     const res = await this.githubHttp.get(url, {
-      headers: { Accept: 'application/vnd.github.v3.raw' },
+      headers: { accept: 'application/vnd.github.v3.raw' },
     });
     const doc = load(res.body, {
       json: true,