diff --git a/flake.lock b/flake.lock
index 4793627..739ee4f 100644
--- a/flake.lock
+++ b/flake.lock
@@ -10,11 +10,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1650900878,
-        "narHash": "sha256-qhNncMBSa9STnhiLfELEQpYC1L4GrYHNIzyCZ/pilsI=",
+        "lastModified": 1663445644,
+        "narHash": "sha256-+xVlcK60x7VY1vRJbNUEAHi17ZuoQxAIH4S4iUFUGBA=",
         "owner": "numtide",
         "repo": "devshell",
-        "rev": "d97df53b5ddaa1cfbea7cddbd207eb2634304733",
+        "rev": "e3dc3e21594fe07bdb24bdf1c8657acaa4cb8f66",
         "type": "github"
       },
       "original": {
@@ -41,11 +41,11 @@
     },
     "flake-utils": {
       "locked": {
-        "lastModified": 1649676176,
-        "narHash": "sha256-OWKJratjt2RW151VUlJPRALb7OU2S5s+f0vLj4o1bHM=",
+        "lastModified": 1659877975,
+        "narHash": "sha256-zllb8aq3YO3h8B/U0/J1WBgAL8EX5yWf5pMj3G0NAmc=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "a4b154ebbdc88c8498a5c7b01589addc9e9cb678",
+        "rev": "c0e246b9b83f637f4681389ecabcb2681b4f3af0",
         "type": "github"
       },
       "original": {
@@ -56,11 +56,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1650970888,
-        "narHash": "sha256-K0Qk6YbkyxBbszkBKCxsLA+jrQpaecf0X8iIO8frS48=",
+        "lastModified": 1665723124,
+        "narHash": "sha256-J1JY2cN0L+CNDSrGkNdbiTl2EFV8hpqqsDJFICsYSBw=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "27a62a9c603d0d832141682cb4f34964d7b48ebb",
+        "rev": "31d567846255e122846548255101980162bbf641",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index d29d687..43669c6 100644
--- a/flake.nix
+++ b/flake.nix
@@ -18,7 +18,7 @@
       hlib = pkgs.haskell.lib;
       plist = hlib.markUnbroken (hlib.overrideSrc compiler.plist { src = plist-source; });
       prefmanager = compiler.callCabal2nix "prefmanager" ./. { inherit plist; };
-      mkShell = devshell.legacyPackages.${system}.mkShell;
+      inherit (devshell.legacyPackages.${system}) mkShell;
     in rec {
       # Built by `nix build .`
       packages.default = prefmanager;
diff --git a/stack.yaml b/stack.yaml
index 5f79949..beea1aa 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,5 +1,5 @@
-# GHC 8.10.7
-resolver: lts-19.5
+# GHC 9.0.2
+resolver: lts-19.28
 
 extra-deps:
 - patience-0.3
@@ -8,7 +8,7 @@ extra-deps:
 - github: malob/plist
   commit: 5e22be0933bf9a100868b944fa7a8b1236b99255
 
-allow-newer: true
+# allow-newer: true
 
 nix:
   pure: true
diff --git a/stack.yaml.lock b/stack.yaml.lock
index 78b9b1b..c590aa5 100644
--- a/stack.yaml.lock
+++ b/stack.yaml.lock
@@ -5,33 +5,33 @@
 
 packages:
 - completed:
+    hackage: patience-0.3@sha256:fe3a2c5b1ac4d3425bad3d1ee0b6bb529b6e74ab41151f8526f26fc8dfa1206b,1252
     pantry-tree:
       sha256: d2ca47451a599605c641b7c353588d7e1ba3d6036c8a52040b7d1b5b1af8959b
       size: 368
-    hackage: patience-0.3@sha256:fe3a2c5b1ac4d3425bad3d1ee0b6bb529b6e74ab41151f8526f26fc8dfa1206b,1252
   original:
     hackage: patience-0.3
 - completed:
+    hackage: base-noprelude-4.13.0.0@sha256:3cccbfda38e1422ca5cc436d58858ba51ff9114d2ed87915a6569be11e4e5a90,6842
     pantry-tree:
       sha256: 90db92c8401880187ce642c5345407bcbd9546ea235524dd445cab2566ee3db1
       size: 112
-    hackage: base-noprelude-4.13.0.0@sha256:3cccbfda38e1422ca5cc436d58858ba51ff9114d2ed87915a6569be11e4e5a90,6842
   original:
     hackage: base-noprelude-4.13.0.0
 - completed:
-    sha256: 7943778b77d008b8e529035d8a4d42c537ede9efe3d24900eb0d855b4567a892
     name: plist
-    size: 4351
-    url: https://github.com/malob/plist/archive/5e22be0933bf9a100868b944fa7a8b1236b99255.tar.gz
     pantry-tree:
       sha256: 4872e51ef6ab654c99e06f286635fe1c977e165bc38f77c6bfb402e9fbff0559
       size: 512
+    sha256: 7943778b77d008b8e529035d8a4d42c537ede9efe3d24900eb0d855b4567a892
+    size: 4351
+    url: https://github.com/malob/plist/archive/5e22be0933bf9a100868b944fa7a8b1236b99255.tar.gz
     version: 0.0.6
   original:
     url: https://github.com/malob/plist/archive/5e22be0933bf9a100868b944fa7a8b1236b99255.tar.gz
 snapshots:
 - completed:
-    sha256: b936d27d647a31a8834d3efec126e2a07dee9c9bd6dd401d9bdac77e7b278f1e
-    size: 619093
-    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/19/5.yaml
-  original: lts-19.5
+    sha256: 7f4393ad659c579944d12202cffb12d8e4b8114566b015f77bbc303a24cff934
+    size: 619405
+    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/19/28.yaml
+  original: lts-19.28