1 files changed, 3 insertions, 3 deletions
diff --git a/pkgs/tools/package-management/nix/default.nix b/pkgs/tools/package-management/nix/default.nix
index e90f71780ebd..ac697be555ac 100644
--- a/pkgs/tools/package-management/nix/default.nix
+++ b/pkgs/tools/package-management/nix/default.nix
@@ -161,12 +161,12 @@ in rec {
 
   nixUnstable = (lib.lowPrio (common rec {
     name = "nix-1.12${suffix}";
-    suffix = "pre5619_346aeee1";
+    suffix = "pre5650_1dd29d7a";
     src = fetchFromGitHub {
       owner = "NixOS";
       repo = "nix";
-      rev = "346aeee1cb21b5cab5ddc3e8658c88321f513761";
-      sha256 = "0lyrs0mqnh89w1nzrqpxvnh7bdjpg8j22xaidql47f1nwbblmn3f";
+      rev = "1dd29d7aebae706f3e90a18bbfae727f2ed03c70";
+      sha256 = "182v2rczm8al1ggbaca8qapvrjyp21li1fd3fiwr5nqgazgr5308";
     };
     fromGit = true;
   })) // { perl-bindings = perl-bindings { nix = nixUnstable; }; };