1 files changed, 1 insertions, 1 deletions
diff --git a/pkgs/applications/version-management/monotone/default.nix b/pkgs/applications/version-management/monotone/default.nix
index 7081e1a0899..bf8e5652d99 100644
--- a/pkgs/applications/version-management/monotone/default.nix
+++ b/pkgs/applications/version-management/monotone/default.nix
@@ -5,7 +5,7 @@
 
 let
   version = "1.1";
-  perlVersion = (builtins.parseDrvName perl.name).version;
+  perlVersion = stdenv.lib.getVersion perl;
 in
 
 assert perlVersion != "";