diff --git a/flake.lock b/flake.lock
index 8aae1e9..070925e 100644
--- a/flake.lock
+++ b/flake.lock
@@ -23,11 +23,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1682779989,
-        "narHash": "sha256-H8AjcIBYFYrlRobYJ+n1B+ZJ6TsaaeZpuLn4iRqVvr4=",
+        "lastModified": 1682977601,
+        "narHash": "sha256-F1Va/Uiw2tVNn27FLqWyBkiqDyIm/eCamw9wA/GK8Fw=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "3144311f31194b537808ae6848f86f3dbf977d59",
+        "rev": "0e4c33d76006c9080d2f228ba1c2308e3e4d7be6",
         "type": "github"
       },
       "original": {
@@ -46,11 +46,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1682951948,
-        "narHash": "sha256-w+auHu4yyZrt93zI/xyrgYrpXlDPmVfKL3Fs9DoF4fQ=",
+        "lastModified": 1682976507,
+        "narHash": "sha256-RC/zTlkOO1zl4vCw3iCH8G6owaf26gMAaQTOn9IEmGA=",
         "owner": "hyprwm",
         "repo": "Hyprland",
-        "rev": "45b1e6dc5ee42b01a377bd875181bc621c72f914",
+        "rev": "c949173bc9c9f9e8276cba098cb82ed51ad4965b",
         "type": "github"
       },
       "original": {
diff --git a/hosts/nuc/modules/hydra/default.nix b/hosts/nuc/modules/hydra/default.nix
index 6d19b06..b273dd4 100644
--- a/hosts/nuc/modules/hydra/default.nix
+++ b/hosts/nuc/modules/hydra/default.nix
@@ -8,6 +8,9 @@ in
     port = 4000;
     hydraURL = domain;
     notificationSender = "hydra@localhost";
+    buildMachinesFiles = [];
+    useSubstitutes = true;
+
   };
   services.nginx.virtualHosts."${domain}" = {
     enableACME = true;
diff --git a/pkgs/dracula-icon-theme/default.nix b/pkgs/dracula-icon-theme/default.nix
index 1567707..a5b9597 100644
--- a/pkgs/dracula-icon-theme/default.nix
+++ b/pkgs/dracula-icon-theme/default.nix
@@ -1,8 +1,8 @@
-{ lib, stdenv, fetchFromGitHub, gtk-engine-murrine }:
+{ lib, stdenv, fetchFromGitHub}:
 
 let
   themeName = "Dracula";
-  version = "1.0";
+  version = "2021-07-21";
 in
 stdenv.mkDerivation {
   pname = "dracula-icon-theme";
@@ -11,7 +11,7 @@ stdenv.mkDerivation {
   src = fetchFromGitHub {
     owner = "m4thewz";
     repo = "dracula-icons";
-    rev = "main";
+    rev = "2d3c83caa8664e93d956cfa67a0f21418b5cdad8";
     sha256 = "GY+XxTM22jyNq8kaB81zNfHRhfXujArFcyzDa8kjxCQ=";
   };
 
@@ -26,6 +26,7 @@ stdenv.mkDerivation {
     description = "Dracula Icon theme";
     homepage = "https://github.com/m4thewz/dracula-icons";
     platforms = platforms.all;
+    license = licenses.gpl3;
     maintainers = with maintainers; [ therealr5 ];
   };
 }