diff --git a/pkgs/development/tools/misc/hydra/default.nix b/pkgs/development/tools/misc/hydra/default.nix
index 4a65d0888347..f8b04af3f974 100644
--- a/pkgs/development/tools/misc/hydra/default.nix
+++ b/pkgs/development/tools/misc/hydra/default.nix
@@ -15,7 +15,7 @@ else
 let
   perlDeps = buildEnv {
     name = "hydra-perl-deps";
-    paths = with perlPackages;
+    paths = with perlPackages; lib.closePropagation
       [ ModulePluggable
         CatalystActionREST
         CatalystAuthenticationStoreDBIxClass