diff --git a/.versions/home-manager.json b/.versions/home-manager.json
index f888472..13eb2b3 100644
--- a/.versions/home-manager.json
+++ b/.versions/home-manager.json
@@ -1,9 +1,9 @@
 {
   "url": "https://github.com/rycee/home-manager.git",
-  "rev": "22f6736e628958f05222ddaadd7df7818fe8f59d",
-  "date": "2020-12-26T11:22:47-08:00",
-  "path": "/nix/store/bhl99z4lvplcglq28x04nda1z8n4b4l0-home-manager",
-  "sha256": "1j4hyjd3kgvwym5jjazzyn554ngrm05ca9wl1a7z1bid22asr99p",
+  "rev": "91bd34620d73340be03642279ee0d1c64110ee6c",
+  "date": "2021-01-22T14:53:58+01:00",
+  "path": "/nix/store/ybmjqanz6r1zg2k5hw5d9131cadms06s-home-manager",
+  "sha256": "1pwn2w21rmnk7nqzx9wmgb4k4kph7vfd1r9wcq9xdn7w27cjdg7v",
   "fetchSubmodules": false,
   "deepClone": false,
   "leaveDotGit": false
diff --git a/.versions/nixpkgs.json b/.versions/nixpkgs.json
index d0e4066..59d4128 100644
--- a/.versions/nixpkgs.json
+++ b/.versions/nixpkgs.json
@@ -1,9 +1,9 @@
 {
   "url": "https://github.com/NixOS/nixpkgs.git",
-  "rev": "3d8fa5f72158b866804ab30f42f6937bf25e420f",
-  "date": "2021-01-14T16:18:34+01:00",
-  "path": "/nix/store/4k38y90qibfdhhsf2dgwanglh1g5k4sj-nixpkgs",
-  "sha256": "18l8pdwz5q1fhp6vya0xg2kppfn9hfl8qyjkffklwynkyj61v6ax",
+  "rev": "a058d005b3cbb370bf171ebce01839dd6ff52222",
+  "date": "2021-01-23T17:41:51-05:00",
+  "path": "/nix/store/6ps307ghgrp10q3mwgw4lq143pmz0h25-nixpkgs",
+  "sha256": "154mpqw0ya31hzgz9hggg1rb26yx8d00rsj9l90ndsdldrssgvbb",
   "fetchSubmodules": false,
   "deepClone": false,
   "leaveDotGit": false
diff --git a/.versions/retiolum.json b/.versions/retiolum.json
index e80a8eb..d094d1f 100644
--- a/.versions/retiolum.json
+++ b/.versions/retiolum.json
@@ -1,9 +1,9 @@
 {
   "url": "https://github.com/krebs/retiolum",
-  "rev": "a15902cf4ccd9b70b486880c1bab92c6b425a805",
-  "date": "2021-01-12T22:32:13+01:00",
-  "path": "/nix/store/sxbkc0v93miygdz8vw9fnhlgifc8820b-retiolum",
-  "sha256": "1r8z57sjv252a1f2dlvxfld95c2isfj62hss5yp8mri63bjxqfax",
+  "rev": "dc2ff145babdee97c03b336e9601f6ab7498c21f",
+  "date": "2021-01-24T16:32:13+01:00",
+  "path": "/nix/store/pzdsyx2ra3v0zyfnncjrgzhbxakgr5as-retiolum",
+  "sha256": "0wa4jx9v920qj9zgr6dagj7cr8dmb5db6rb94bbk4g104lysmz5b",
   "fetchSubmodules": false,
   "deepClone": false,
   "leaveDotGit": false
diff --git a/configs/nix.nix b/configs/nix.nix
index 39b3738..3c7d9f4 100644
--- a/configs/nix.nix
+++ b/configs/nix.nix
@@ -3,8 +3,8 @@
   # enable `nix flake`
   nix = {
     package = pkgs.nixUnstable;
-    extraOptions = ''
-      experimental-features = nix-command flakes
-    '';
+    # extraOptions = ''
+    #   experimental-features = nix-command flakes
+    # '';
   };
 }