diff --git a/flake.lock b/flake.lock
index ee1ca0d1e..305cb2e4f 100644
--- a/flake.lock
+++ b/flake.lock
@@ -23,11 +23,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1782657028,
-        "narHash": "sha256-PHTCpYZCMzJYS3phhywqRAZphKVr2zjvlGYa+H20ZZ4=",
+        "lastModified": 1787661347,
+        "narHash": "sha256-THmnBAdAIV+jT348f3r/vyoeb6ilhcVLwVXkBU7Pai8=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "4ad9aaae70c9aaab504127f926c0fa9cfbc2b365",
+        "rev": "52c3a5881c821ad7367bbde075e52b76cdb378ab",
         "type": "github"
       },
       "original": {
@@ -38,15 +38,15 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1782545840,
-        "narHash": "sha256-CAi8oAZaE6pTkcYQBnnOlvmfMgG/p1AO0FohKKN3J7I=",
-        "rev": "3d46470bb3030020f7e1361f33514854f5bfa86d",
+        "lastModified": 1787424095,
+        "narHash": "sha256-SpMiSe9OSfWseGAupsdcED3He9mTYTbGMtWb7EVt6pE=",
+        "rev": "174eb786fb68e3a13e4e535a3deea479a0c07a6a",
         "type": "tarball",
-        "url": "https://releases.nixos.org/nixpkgs/nixpkgs-26.11pre1023445.3d46470bb303/nixexprs.tar.xz"
+        "url": "https://releases.nixos.org/nixpkgs/nixpkgs-26.11pre1059855.174eb786fb68/nixexprs.tar.zst"
       },
       "original": {
         "type": "tarball",
-        "url": "https://channels.nixos.org/nixpkgs-unstable/nixexprs.tar.xz"
+        "url": "https://channels.nixos.org/nixpkgs-unstable/nixexprs.tar.zst"
       }
     },
     "root": {
@@ -88,11 +88,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1782609341,
-        "narHash": "sha256-OfCPJFS/2Z2ZyjE4adR7PL+ZEqvDQFi2XNI1L8s6wKU=",
+        "lastModified": 1787617283,
+        "narHash": "sha256-jiM1glpDL5ASrqvcWyacI+c1wZo3g6AUhdo6M09AoiY=",
         "owner": "mitchellh",
         "repo": "zig-overlay",
-        "rev": "5386fea92c45b154bbeb52d14ef5504f82eda86c",
+        "rev": "da55b9fe9260fb3eb1456c3ee6064b8f738e4ba9",
         "type": "github"
       },
       "original": {
@@ -108,11 +108,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1784117571,
+        "lastModified": 1784080626,
         "narHash": "sha256-Hvnmnuu0VpHiZl+8z+UkMoxC7JZJvRYBqu2Asb0ZJOE=",
         "owner": "jcollie",
         "repo": "zon2nix",
-        "rev": "0ce628fb78309cdb13d098ae9c6fdbf87c75d25b",
+        "rev": "776b5f6864a607c141d7966421b433fa1657ba9a",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index 7591603f9..f951b132f 100644
--- a/flake.nix
+++ b/flake.nix
@@ -6,10 +6,10 @@
     # glibc versions used by our dependencies from Nix are compatible with the
     # system glibc that the user is building for.
     #
-    # We are currently on nixpkgs-unstable to get Zig 0.15 for our package.nix and
-    # Gnome 49/Gtk 4.20.
+    # We are currently on nixpkgs-unstable to get Zig 0.16 for our package.nix,
+    # Gnome 50/Gtk 4.22, and fontconfig 2.18.
     #
-    nixpkgs.url = "https://channels.nixos.org/nixpkgs-unstable/nixexprs.tar.xz";
+    nixpkgs.url = "https://channels.nixos.org/nixpkgs-unstable/nixexprs.tar.zst";
 
     # Used for shell.nix
     flake-compat = {
@@ -76,25 +76,7 @@
     devShells = forAllPlatforms (pkgs: {
       default =
         pkgs.callPackage ./nix/devShell.nix
-        (let
-          libfyaml =
-            if pkgs.stdenv.hostPlatform.isDarwin
-            then
-              pkgs.libfyaml.overrideAttrs (prev: {
-                # Manually fix libfyaml.pc until NixOS/nixpkgs#515614 is available
-                postInstall =
-                  (prev.postInstall or "")
-                  + ''
-                    substituteInPlace "$dev/lib/pkgconfig/libfyaml.pc" \
-                      --replace-fail " none required" ""
-                  '';
-              })
-            else pkgs.libfyaml;
-
-          appstream = pkgs.appstream.override {libfyaml = libfyaml;};
-          libadwaita = pkgs.libadwaita.override {appstream = appstream;};
-          blueprint-compiler = pkgs.blueprint-compiler.override {libadwaita = libadwaita;};
-        in {
+        {
           zig = zig.packages.${pkgs.stdenv.hostPlatform.system}."0.16.0";
           wraptest = pkgs.callPackage ./nix/pkgs/wraptest.nix {};
           zon2nix = zon2nix;
@@ -107,9 +89,7 @@
               wcwidth = pyfinal.callPackage ./nix/pkgs/wcwidth.nix {};
             };
           };
-
-          inherit appstream libadwaita blueprint-compiler;
-        });
+        };
     });
 
     packages =