diff --git a/ofborg/src/tasks/massrebuilder.rs b/ofborg/src/tasks/massrebuilder.rs
index 19dc889..ee95b09 100644
--- a/ofborg/src/tasks/massrebuilder.rs
+++ b/ofborg/src/tasks/massrebuilder.rs
@@ -348,6 +348,9 @@ impl<E: stats::SysEvents + 'static> worker::SimpleWorker for MassRebuildWorker<E
                 "nixos-options",
                 nix::Operation::Instantiate,
                 vec![
+                    String::from("--arg"),
+                    String::from("nixpkgs"),
+                    String::from("./."),
                     String::from("./nixos/release.nix"),
                     String::from("-A"),
                     String::from("options"),
@@ -359,6 +362,9 @@ impl<E: stats::SysEvents + 'static> worker::SimpleWorker for MassRebuildWorker<E
                 "nixos-manual",
                 nix::Operation::Instantiate,
                 vec![
+                    String::from("--arg"),
+                    String::from("nixpkgs"),
+                    String::from("./."),
                     String::from("./nixos/release.nix"),
                     String::from("-A"),
                     String::from("manual"),
@@ -370,6 +376,9 @@ impl<E: stats::SysEvents + 'static> worker::SimpleWorker for MassRebuildWorker<E
                 "nixpkgs-manual",
                 nix::Operation::Instantiate,
                 vec![
+                    String::from("--arg"),
+                    String::from("nixpkgs"),
+                    String::from("./."),
                     String::from("./pkgs/top-level/release.nix"),
                     String::from("-A"),
                     String::from("manual"),
@@ -381,6 +390,9 @@ impl<E: stats::SysEvents + 'static> worker::SimpleWorker for MassRebuildWorker<E
                 "nixpkgs-tarball",
                 nix::Operation::Instantiate,
                 vec![
+                    String::from("--arg"),
+                    String::from("nixpkgs"),
+                    String::from("./."),
                     String::from("./pkgs/top-level/release.nix"),
                     String::from("-A"),
                     String::from("tarball"),
@@ -392,6 +404,9 @@ impl<E: stats::SysEvents + 'static> worker::SimpleWorker for MassRebuildWorker<E
                 "nixpkgs-unstable-jobset",
                 nix::Operation::Instantiate,
                 vec![
+                    String::from("--arg"),
+                    String::from("nixpkgs"),
+                    String::from("./."),
                     String::from("./pkgs/top-level/release.nix"),
                     String::from("-A"),
                     String::from("unstable"),