diff --git a/pkgs/top-level/release.nix b/pkgs/top-level/release.nix
index c05140a86a1a..51f318b725aa 100644
--- a/pkgs/top-level/release.nix
+++ b/pkgs/top-level/release.nix
@@ -12,7 +12,7 @@ let
   prio = level: job: toJob job // { schedulingPriority = level; };
 
   toJob = x: if builtins.isAttrs x then x else
-    { type = "job"; systems = x; schedulingPriority = 100; };
+    { type = "job"; systems = x; schedulingPriority = 20; };
 
   /* Perform a job on the given set of platforms.  The function `f' is
      called by Hydra for each platform, and should return some job