diff --git a/apt/private/package_index.bzl b/apt/private/package_index.bzl
index e4e5636..c60ed3a 100644
--- a/apt/private/package_index.bzl
+++ b/apt/private/package_index.bzl
@@ -13,7 +13,7 @@ def _fetch_package_index(rctx, url, dist, comp, arch, integrity):
             url = "{}/dists/{}/{}/binary-{}/Packages.{}".format(url, dist, comp, arch, file_type),
             output = output,
             integrity = integrity,
-            allow_fail=True,
+            allow_fail = True,
         )
         if r.success:
             rctx.execute(tool + [output])