diff --git a/pkgs/tools/package-management/nix/default.nix b/pkgs/tools/package-management/nix/default.nix
index 959c463745d9..780a302bcd63 100644
--- a/pkgs/tools/package-management/nix/default.nix
+++ b/pkgs/tools/package-management/nix/default.nix
@@ -90,7 +90,7 @@ in lib.makeExtensible (self: {
     sha256 = "sha256-W6aTsTpCTb+vXQEXDjnKqetOuJmEfSuK2CXvAMqwo74=";
   };
 
-  stable = self.nix_2_8;
+  stable = self.nix_2_9;
 
   unstable = lib.lowPrio (common rec {
     version = "2.8";