diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 0a3a6c2b8a5d..1d2e8e4fe379 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -4908,7 +4908,8 @@ let
     fetchurl = fetchurlBoot;
   };
 
-  perl = perl522;
+  # Make perl522 the default once gnulib is updated to support it.
+  perl = perl520;
 
   php = php56;