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 21b333f3231..cb1f5192822 100644
--- a/pkgs/tools/package-management/nix/default.nix
+++ b/pkgs/tools/package-management/nix/default.nix
@@ -124,12 +124,12 @@ in rec {
 
   nixUnstable = (lib.lowPrio (common rec {
     name = "nix-2.0${suffix}";
-    suffix = "pre5950_3a5a241b";
+    suffix = "pre5951_690ac7c9";
     src = fetchFromGitHub {
       owner = "NixOS";
       repo = "nix";
-      rev = "3a5a241b3209f14f8801b902ba20b5cb0666c9df";
-      sha256 = "0cwjyhgyfzi2dz561nj897zhkbyx6lzi49avcyia2pr4498jcl6k";
+      rev = "690ac7c90b5bf3c599e210c53365c7d229c8b0ff";
+      sha256 = "1yn2p38kp1i67makbawr1rhdiwihgnvk2zwrz0gvf6q65mj2k89c";
     };
     fromGit = true;
   })) // { perl-bindings = perl-bindings { nix = nixUnstable; }; };