diff --git a/Data/Scripts/001_Settings.rb b/Data/Scripts/001_Settings.rb
index 9ed6bb43..347d14f8 100644
--- a/Data/Scripts/001_Settings.rb
+++ b/Data/Scripts/001_Settings.rb
@@ -446,5 +446,5 @@ end
 module Essentials
   VERSION = "20.1.dev"
   ERROR_TEXT = ""
-  MKXPZ_VERSION = "2.4"
+  MKXPZ_VERSION = "2.4.2"
 end
diff --git a/Data/Scripts/001_Technical/001_MKXP_Compatibility.rb b/Data/Scripts/001_Technical/001_MKXP_Compatibility.rb
index 2ff0c10a..196161ba 100644
--- a/Data/Scripts/001_Technical/001_MKXP_Compatibility.rb
+++ b/Data/Scripts/001_Technical/001_MKXP_Compatibility.rb
@@ -1,6 +1,5 @@
-# Using mkxp-z v2.4.0 - https://gitlab.com/mkxp-z/mkxp-z/-/releases/v2.4.0
+# Using mkxp-z v2.4.2 - https://github.com/mkxp-z/mkxp-z/releases/tag/v2.4.2
 $VERBOSE = nil
-begin; require 'zlib'; rescue; nil; end
 Font.default_shadow = false if Font.respond_to?(:default_shadow)
 Graphics.frame_rate = 40
 Encoding.default_internal = Encoding::UTF_8
@@ -30,7 +29,7 @@ end
 
 module Graphics
   def self.delta_s
-    return self.delta.to_f / 1_000_000
+    return self.delta
   end
 end
 
diff --git a/Game.exe b/Game.exe
index b6c05ed5..e630da7b 100644
Binary files a/Game.exe and b/Game.exe differ
diff --git a/mkxp.json b/mkxp.json
index eefccdc7..8adb2af3 100644
--- a/mkxp.json
+++ b/mkxp.json
@@ -8,8 +8,12 @@
     // working directory (when compiled with
     // -DWORKDIR_CURRENT). All other paths are resolved
     // relative to gameFolder and ignoring both RTPs and
-    // encrypted archives.
-    
+    // encrypted archives. Since this is JSON, any
+    // backslashes in paths need to be escaped (i.e. a
+    // single backslash becomes a double backslash). If
+    // that's too much hassle, you can use a single forward
+    // slash instead (even on Windows).
+    //
     // Some influential environment variables, set them to either "1" or "0":
     // "MKXPZ_WINDOWS_CONSOLE"
     //     - Enables/disables the extra console window on Windows. It appears by
@@ -22,6 +26,10 @@
     // "MKXPZ_FOLDER_SELECT"
     //     - Allows the manual selection of the game's folder at startup.
     //       Only works on macOS at the moment.
+    // "MTL_HUD_ENABLED"
+    //     - On macOS 13 (Ventura) and over, provided the Metal backend is used,
+    //       this will enable a full performance HUD containing more details than
+    //       the built-in framerate display.
 
 
     // Specify the RGSS version to run under.
@@ -69,6 +77,13 @@
     // "smoothScaling": false,
 
 
+    // Apply Lanczos3 interpolation when game screen
+    // is upscaled (typically higher quality than linear)
+    // (default: disabled)
+    //
+    // "lanczos3Scaling": false,
+
+
     // Sync screen redraws to the monitor refresh rate
     // (default: disabled)
     //
@@ -125,10 +140,10 @@
     // "syncToRefreshrate": false,
 
 
-    // Don't use alpha blending when rendering text
-    // (default: disabled)
+    // A list of fonts to render without alpha blending.
+    // (default: none)
     //
-    // "solidFonts": false,
+    // "solidFonts": ["Arial", "Times New Roman"]
 
 
     // Prefer the use of Metal over OpenGL on macOS.
@@ -146,8 +161,8 @@
     // (default: true if Apple Silicon, false if Intel)
     //
     // "preferMetalRenderer": true,
-    
-    
+
+
     // Work around buggy graphics drivers which don't
     // properly synchronize texture access, most
     // apparent when text doesn't show up or the map
@@ -200,8 +215,8 @@
     // (default: enabled)
     //
     // "integerScalingLastMile": true,
-    
-    
+
+
     // Set the base path of the game to '/path/to/game'
     // (default: executable directory)
     //
@@ -316,16 +331,17 @@
     //                  "/usr/local/share/ruby/site_ruby"],
 
 
-    // Determines whether JIT is enabled. This probably
+    // Determines whether MJIT is enabled. This probably
     // won't work unless you also have the header file
     // that it needs. Only works with Ruby 2.6 or higher.
+    // This Ruby feature is experimental.
     // (default: false)
     //
     // "JITEnable": false,
 
 
     // Determines what level of verbosity to use when
-    // logging JIT events. Starts at 0, which is next
+    // logging MJIT events. Starts at 0, which is next
     // to nothing. Set it higher to see more.
     // (default: 0)
     //
@@ -333,19 +349,27 @@
 
 
     // Determines how many compiled methods that Ruby
-    // will keep in its cache.
+    // will keep in its MJIT cache.
     // (default: 100)
     //
     // "JITMaxCache": 100,
 
 
     // Determines how many times a function has to be
-    // called before it is compiled.
+    // called before it is compiled by MJIT.
     // (default: 10000)
     //
     // "JITMinCalls": 10000,
 
 
+    // Determines whether YJIT is enabled.
+    // Only works with Ruby 3.1 or higher.
+    // This Ruby feature is experimental.
+    // (default: false)
+    //
+    // "YJITEnable": false,
+
+
     // SoundFont to use for midi playback (via fluidsynth)
     // (default: none)
     //
@@ -370,6 +394,13 @@
     // "SESourceCount": 6
 
 
+    // Number of streams to open for BGM tracks. If the game
+    // needs multitrack audio, this should be set to as many
+    // available tracks as the game needs. Maximum: 16.
+    //
+    // "BGMTrackCount": 1
+
+
     // The Windows game executable name minus ".exe". By default
     // this is "Game", but some developers manually rename it.
     // mkxp needs this name because both the .ini (game
diff --git a/x64-msvcrt-ruby310.dll b/x64-msvcrt-ruby310.dll
index ba6e223e..03972bcc 100644
Binary files a/x64-msvcrt-ruby310.dll and b/x64-msvcrt-ruby310.dll differ
diff --git a/zlib1.dll b/zlib1.dll
index 571908d0..92b6761a 100644
Binary files a/zlib1.dll and b/zlib1.dll differ