diff --git a/pkgs/tools/package-management/nix/default.nix b/pkgs/tools/package-management/nix/default.nix
index 514843790c21..d8dba67d39b0 100644
--- a/pkgs/tools/package-management/nix/default.nix
+++ b/pkgs/tools/package-management/nix/default.nix
@@ -111,7 +111,7 @@ in lib.makeExtensible (self: {
     sha256 = "sha256-uXh4+xjJUHQSCg+LHh6+SSYtMdjKQiTXMZ4uZFwzdq4=";
   };
 
-  stable = self.nix_2_13;
+  stable = self.nix_2_12;
 
   unstable = self.stable;
 })