diff --git a/flake.lock b/flake.lock
index 135a36e..f32e408 100644
--- a/flake.lock
+++ b/flake.lock
@@ -5,11 +5,11 @@
         "nixpkgs-lib": "nixpkgs-lib"
       },
       "locked": {
-        "lastModified": 1693611461,
-        "narHash": "sha256-aPODl8vAgGQ0ZYFIRisxYG5MOGSkIczvu2Cd8Gb9+1Y=",
+        "lastModified": 1690933134,
+        "narHash": "sha256-ab989mN63fQZBFrkk4Q8bYxQCktuHmBIBqUG1jl6/FQ=",
         "owner": "hercules-ci",
         "repo": "flake-parts",
-        "rev": "7f53fdb7bdc5bb237da7fefef12d099e4fd611ca",
+        "rev": "59cf3f1447cfc75087e7273b04b31e689a8599fb",
         "type": "github"
       },
       "original": {
@@ -20,26 +20,28 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1695806987,
-        "narHash": "sha256-fX5kGs66NZIxCMcpAGIpxuftajHL8Hil1vjHmjjl118=",
-        "owner": "NixOS",
+        "lastModified": 1691065946,
+        "narHash": "sha256-IVSh42Q3oJwUjgLKMdzH5fMx+fk1z3V735gK1Izj1Zw=",
+        "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "f3dab3509afca932f3f4fd0908957709bb1c1f57",
+        "rev": "e9ca92b55bed47696cc7cc25d3f854a1e2e01f86",
         "type": "github"
       },
       "original": {
-        "id": "nixpkgs",
-        "type": "indirect"
+        "owner": "nixos",
+        "ref": "release-23.05",
+        "repo": "nixpkgs",
+        "type": "github"
       }
     },
     "nixpkgs-lib": {
       "locked": {
         "dir": "lib",
-        "lastModified": 1693471703,
-        "narHash": "sha256-0l03ZBL8P1P6z8MaSDS/MvuU8E75rVxe5eE1N6gxeTo=",
+        "lastModified": 1690881714,
+        "narHash": "sha256-h/nXluEqdiQHs1oSgkOOWF+j8gcJMWhwnZ9PFabN6q0=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "3e52e76b70d5508f3cec70b882a29199f4d1ee85",
+        "rev": "9e1960bc196baf6881340d53dccb203a951745a2",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index 0fe3a10..220915b 100644
--- a/flake.nix
+++ b/flake.nix
@@ -2,8 +2,7 @@
   description = "FabApp";
 
   inputs = {
-    # take unstable if not specified
-    # nixpkgs.url = "github:nixos/nixpkgs/release-23.05";
+    nixpkgs.url = "github:nixos/nixpkgs/release-23.05";
     flake-parts.url = "github:hercules-ci/flake-parts";
   };
 
@@ -49,9 +48,6 @@
               gtk3
               pcre
               libepoxy
-
-              # Zig / webAssembly impl.
-              zig
             ];
             
             # see: https://discourse.nixos.org/t/flutter-run-d-linux-build-process-failed/16552/2