diff --git a/nix/sources.json b/nix/sources.json
index 3a8a87eb..96f56be6 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -5,46 +5,34 @@
         "homepage": "",
         "owner": "nix-community",
         "repo": "NUR",
-        "rev": "1d29239536150593419fedc3d3a7c8ce7f0bb7b4",
-        "sha256": "1ig95aw0pb5p8xvifx1xc8s6785s5ynkssccf6fxp2cy7cnqm8h8",
+        "rev": "c36d5e64c0d387fa8166be15024e46b12aa492b6",
+        "sha256": "07jfgd33hfy6gkk3jxa03f89zs4zj1hpbkzdf93l19a9bx66bgw2",
         "type": "tarball",
-        "url": "https://github.com/nix-community/NUR/archive/1d29239536150593419fedc3d3a7c8ce7f0bb7b4.tar.gz",
+        "url": "https://github.com/nix-community/NUR/archive/c36d5e64c0d387fa8166be15024e46b12aa492b6.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "home-manager": {
         "branch": "master",
-        "description": "Manage a user environment using Nix",
-        "homepage": "https://rycee.gitlab.io/home-manager/",
-        "owner": "rycee",
+        "description": "Manage a user environment using Nix  [maintainer=@rycee] ",
+        "homepage": "https://nix-community.github.io/home-manager/",
+        "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "182454fe6b2342011ac3ae7c93cf5fb0ccd17bd7",
-        "sha256": "1r1jnjn1cp320bs94pz4ralyrwn1q0srk1jivrn0m2hizp50dni1",
-        "type": "tarball",
-        "url": "https://github.com/rycee/home-manager/archive/182454fe6b2342011ac3ae7c93cf5fb0ccd17bd7.tar.gz",
-        "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
-    },
-    "niv": {
-        "branch": "master",
-        "description": "Easy dependency management for Nix projects",
-        "homepage": "https://github.com/nmattia/niv",
-        "owner": "nmattia",
-        "repo": "niv",
-        "rev": "fad2a6cbfb2e7cdebb7cb0ad2f5cc91e2c9bc06b",
-        "sha256": "0mghc1j0rd15spdjx81bayjqr0khc062cs25y5dcfzlxk4ynyc6m",
+        "rev": "4cc1b77c3fc4f4b3bc61921dda72663eea962fa3",
+        "sha256": "02y6bjakcbfc0wvf9b5qky792y9abyf1kgnk8r30f1advn3x69nc",
         "type": "tarball",
-        "url": "https://github.com/nmattia/niv/archive/fad2a6cbfb2e7cdebb7cb0ad2f5cc91e2c9bc06b.tar.gz",
+        "url": "https://github.com/nix-community/home-manager/archive/4cc1b77c3fc4f4b3bc61921dda72663eea962fa3.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "nixpkgs": {
         "branch": "nixos-unstable",
-        "description": "A read-only mirror of NixOS/nixpkgs tracking the released channels. Send issues and PRs to",
-        "homepage": "https://github.com/NixOS/nixpkgs",
-        "owner": "NixOS",
-        "repo": "nixpkgs-channels",
-        "rev": "c59ea8b8a0e7f927e7291c14ea6cd1bd3a16ff38",
-        "sha256": "1ak7jqx94fjhc68xh1lh35kh3w3ndbadprrb762qgvcfb8351x8v",
+        "description": "Nix Packages collection",
+        "homepage": "",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "b839d4a8557adc80e522f674529e586ab2a88d23",
+        "sha256": "1yr68sj0wx78fw4xi0swhlwbmqbznd5c1klmshqrrdclnr45agcd",
         "type": "tarball",
-        "url": "https://github.com/NixOS/nixpkgs-channels/archive/c59ea8b8a0e7f927e7291c14ea6cd1bd3a16ff38.tar.gz",
+        "url": "https://github.com/nixos/nixpkgs/archive/b839d4a8557adc80e522f674529e586ab2a88d23.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "pre-commit-hooks.nix": {
@@ -53,10 +41,10 @@
         "homepage": "",
         "owner": "cachix",
         "repo": "pre-commit-hooks.nix",
-        "rev": "a3f7609ba73eb9ce3fe434d4339101017a430912",
-        "sha256": "05mi3s7c30wylfyxfb3hab0w9cbjahskmz4abidbxsmchjyici6a",
+        "rev": "431227b41d0aaa83fabdee6611e145b7d9bd150b",
+        "sha256": "0ff24n8i3mfw0jw5r5lsgvbahmh88zhi3qsk9yxrb8x82jprgzsy",
         "type": "tarball",
-        "url": "https://github.com/cachix/pre-commit-hooks.nix/archive/a3f7609ba73eb9ce3fe434d4339101017a430912.tar.gz",
+        "url": "https://github.com/cachix/pre-commit-hooks.nix/archive/431227b41d0aaa83fabdee6611e145b7d9bd150b.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     }
 }