diff --git a/pkgs/tools/package-management/nix/default.nix b/pkgs/tools/package-management/nix/default.nix
index 2917cfdd9eb5..6a2b2948ff95 100644
--- a/pkgs/tools/package-management/nix/default.nix
+++ b/pkgs/tools/package-management/nix/default.nix
@@ -192,8 +192,8 @@ in lib.makeExtensible (self: ({
   };
 
   nix_2_18 = common {
-    version = "2.18.0";
-    hash = "sha256-ggISAuGpTkKp6JXt1BbcLtLDYOPECWqrVnPVgQEFHYc=";
+    version = "2.18.1";
+    hash = "sha256-WNmifcTsN9aG1ONkv+l2BC4sHZZxtNKy0keqBHXXQ7w=";
   };
 
   # The minimum Nix version supported by Nixpkgs