diff --git a/macbuild/ReadMe.md b/macbuild/ReadMe.md
index 89f1ac98c..8d86c7245 100644
--- a/macbuild/ReadMe.md
+++ b/macbuild/ReadMe.md
@@ -1,6 +1,6 @@
-Relevant KLayout version: 0.29.3<br>
+Relevant KLayout version: 0.29.4<br>
 Author: Kazzz-S<br>
-Last modified: 2024-07-05<br>
+Last modified: 2024-07-10<br>
 
 # 1. Introduction
 This directory **`macbuild`** contains various files required for building KLayout (http://www.klayout.de/) version 0.29.0 or later for different 64-bit macOS, including:
@@ -190,7 +190,7 @@ $ ./build4mac.py -q qt5macports -r mp33 -p mp311 -Y
 
 ### 6C. Fully Homebrew-flavored build with Homebrew Ruby 3.3 and Homebrew Python 3.11
 > [!IMPORTANT]
-> To build KLayout >= 0.29.0, you need "Qt6" >= 6.7.1 to address [the compilation issue](https://github.com/KLayout/klayout/issues/1599).<br>
+> To build KLayout >= 0.29.0, you need "Qt6" >= 6.7.0 to address [the compilation issue](https://github.com/KLayout/klayout/issues/1599).<br>
 
 0. Install Homebrew, then install Qt6, Ruby 3.3, Python 3.11, and libgit2 by
 ```
@@ -224,7 +224,7 @@ $ ./build4mac.py -q qt6brew -r hb33 -p hb311 -Y
 
 ### 6D. Partially Homebrew-flavored build with System Ruby and Homebrew Python 3.11
 > [!IMPORTANT]
-> To build KLayout >= 0.29.0, you need "Qt6" >= 6.7.1 to address [the compilation issue](https://github.com/KLayout/klayout/issues/1599).<br>
+> To build KLayout >= 0.29.0, you need "Qt6" >= 6.7.0 to address [the compilation issue](https://github.com/KLayout/klayout/issues/1599).<br>
 
 0. Install Homebrew, then install Qt6, Python 3.11, and libgit2 by
 ```
diff --git a/macbuild/build4mac_env.py b/macbuild/build4mac_env.py
index 8f0e09dcc..6436b11cc 100755
--- a/macbuild/build4mac_env.py
+++ b/macbuild/build4mac_env.py
@@ -182,7 +182,7 @@ RubySonoma      = { 'exe':  '/System/Library/Frameworks/Ruby.framework/Versions/
 #  install with 'sudo port install ruby33'
 # [Key Type Name] = 'MP33'
 Ruby33MacPorts  = { 'exe': '/opt/local/bin/ruby3.3',
-                    'inc': '/opt/local/include/ruby-3.3.3',
+                    'inc': '/opt/local/include/ruby-3.3.4',
                     'lib': '/opt/local/lib/libruby.3.3.dylib'
                   }