diff --git a/build.zig.zon b/build.zig.zon
index 89c7662..4e31ae2 100644
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -2,7 +2,7 @@
     .name = .voxel_game,
     .version = "0.0.0",
     .fingerprint = 0xfa26431018c1674c,
-    .minimum_zig_version = "0.15.2",
+    .minimum_zig_version = "0.17.0",
 
     .dependencies = .{
         .media = .{
@@ -12,8 +12,8 @@
             .path = "castle/packages/vecmath",
         },
         .vulkan_zig = .{
-            .url = "git+https://github.com/Snektron/vulkan-zig.git#f75b0011214705d6593e6ad64948c4832b1e6f27",
-            .hash = "vulkan-0.0.0-r7Ytx759AwBNdwE-gHKt3vzRQaU7RFerBg3FmD7iTEv4",
+            .url = "git+https://github.com/Snektron/vulkan-zig.git#f9688c6f4ebcb930f67044698ddd1322442e714b",
+            .hash = "vulkan-0.0.0-r7Ytx4yGAwDZf0XsT6_L1ol_XUAkyOgOyBqamf8begA0",
         },
         .zglfw = .{
             .url = "git+https://github.com/zig-gamedev/zglfw.git#51003c105d23db378bb59ce415a387b22f1b0892",
diff --git a/castle b/castle
index 99b8cf1..8a8b84a 160000
--- a/castle
+++ b/castle
@@ -1 +1 @@
-Subproject commit 99b8cf1d8e75c788b88463d4c1df3f1415162324
+Subproject commit 8a8b84a730cafb9b10cb1e1e7b23f950d1c7548b
diff --git a/src/const.zig b/src/const.zig
index 92ddb0f..fa6fc92 100644
--- a/src/const.zig
+++ b/src/const.zig
@@ -18,8 +18,6 @@ pub const min_window_size = vm.Vector2Int.init(default_window_width, default_win
 
 pub const window_title = "Voxel Game";
 
-pub const temp_allocator_capacity = 16 * 1024 * 1024;
-
 // Coordinate spaces:
 // - CS (clip space, as required by Vulkan)
 // - VS (view space, looking towards +Y, +X is right and +Z is up)