diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 94c0ab8..50f6168 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -76,7 +76,7 @@ jobs:
           --bash-syntax
           --enable-backslash-escapes
 
-      - name: Print some build-specific variables
+      - name: Print build-specific variables
         shell: bash
         run: scripts/print_build_variables.sh  # bash -x scripts/print_build_variables.sh for printing commands
 
@@ -267,7 +267,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-22.04, windows-2022, macos-12, macos-14]
+        os: [macos-12, macos-14]
         python-version: ['3.10', '3.11', '3.12']
         toolchain:
           - { exe: gfortran, compiler: gcc, version: 13 }
diff --git a/scripts.py b/scripts.py
index bcd8de3..498cfdd 100644
--- a/scripts.py
+++ b/scripts.py
@@ -1031,8 +1031,8 @@ def change_runpath_for_built_pycfml():
     # install_name_tool -rpath /opt/intel/oneapi/compiler/2023.2.0/mac/bin/intel64/../../compiler/lib @loader_path dist/pyCFML/pycrysfml/crysfml08lib.so
     # install_name_tool -delete_rpath /usr/local/Cellar/gcc/13.2.0/lib/gcc/current dist/pyCFML/pycrysfml/crysfml08lib.so
     # install_name_tool -change /usr/local/opt/gcc/lib/gcc/current/libgfortran.5.dylib @rpath/libgfortran.5.dylib dist/pyCFML/pycrysfml/crysfml08lib.so
-    # otool -l dist/pyCFML/pycrysfml/crysfml08lib.so | grep RPATH -A2
-    # otool -L dist/pyCFML/pycrysfml/crysfml08lib.so
+    # otool -l dist/pyCFML/pycrysfml/crysfml08lib.so | grep RPATH -A2  # build.rpaths in in scripts.toml
+    # otool -L dist/pyCFML/pycrysfml/crysfml08lib.so                   # build.dependent-libs in scripts.toml
     try:
         rpaths = CONFIG['build']['rpaths'][_platform()][_processor()][_compiler_name()]
     except KeyError:
diff --git a/scripts.toml b/scripts.toml
index f8205c4..b4ca9e1 100644
--- a/scripts.toml
+++ b/scripts.toml
@@ -125,14 +125,24 @@ shared-lib-ext = { macos = 'so', linux = 'so', windows = 'pyd' }  # *.dylib does
 ifport-lib.linux.ifort = '-L/opt/intel/oneapi/compiler/2023.2.0/linux/compiler/lib/intel64_lin -lifport'
 ifport-lib.linux.ifx = '-L/opt/intel/oneapi/compiler/2023.2.0/linux/compiler/lib/intel64_lin -lifport'
 extra-libs.macos.i386.gfortran = [
-    '/usr/local/opt/gcc/lib/gcc/current/libgfortran.5.dylib',
-    '/usr/local/opt/gcc/lib/gcc/current/libgcc_s.1.1.dylib',
-    '/usr/local/opt/gcc/lib/gcc/current/libquadmath.0.dylib',
+    # current gcc
+    #'/usr/local/opt/gcc/lib/gcc/current/libgfortran.5.dylib',
+    #'/usr/local/opt/gcc/lib/gcc/current/libgcc_s.1.1.dylib',
+    #'/usr/local/opt/gcc/lib/gcc/current/libquadmath.0.dylib',
+    # gcc 13
+    '/usr/local/opt/gcc@13/lib/gcc/13/libgfortran.5.dylib',
+    '/usr/local/opt/gcc@13/lib/gcc/13/libgcc_s.1.1.dylib',
+    '/usr/local/opt/gcc@13/lib/gcc/13/libquadmath.0.dylib',
 ]
 extra-libs.macos.arm.gfortran = [
-    '/opt/homebrew/opt/gcc/lib/gcc/current/libgfortran.5.dylib',
-    '/opt/homebrew/opt/gcc/lib/gcc/current/libgcc_s.1.1.dylib',
-    '/opt/homebrew/opt/gcc/lib/gcc/current/libquadmath.0.dylib'
+    # current gcc
+    #'/opt/homebrew/opt/gcc/lib/gcc/current/libgfortran.5.dylib',
+    #'/opt/homebrew/opt/gcc/lib/gcc/current/libgcc_s.1.1.dylib',
+    #'/opt/homebrew/opt/gcc/lib/gcc/current/libquadmath.0.dylib'
+    # gcc 13
+    '/opt/homebrew/opt/gcc@13/lib/gcc/13/libgfortran.5.dylib',
+    #'/opt/homebrew/opt/gcc@13/lib/gcc/13/libgcc_s.1.1.dylib',
+    '/opt/homebrew/opt/gcc@13/lib/gcc/13/libquadmath.0.dylib',
 ]
 extra-libs.macos.i386.ifort = [
     '/System/Volumes/Data/opt/intel/oneapi/compiler/2023.2.0/mac/compiler/lib/libifport.dylib',
@@ -230,13 +240,22 @@ rpaths.macos.arm.ifort = [
     { old = '/opt/intel/oneapi/compiler/2023.2.0/mac/bin/intel64/../../compiler/lib', new = '@loader_path' },
 ]
 dependent-libs.macos.i386.gfortran = [
-    { old = '/usr/local/opt/gcc/lib/gcc/current/libgfortran.5.dylib', new = '@rpath/libgfortran.5.dylib' },
-    { old = '/usr/local/opt/gcc/lib/gcc/current/libgcc_s.1.1.dylib',  new = '@rpath/libgcc_s.1.1.dylib' },
-    { old = '/usr/local/opt/gcc/lib/gcc/current/libquadmath.0.dylib', new = '@rpath/libquadmath.0.dylib' },
+    # current gcc
+    #{ old = '/usr/local/opt/gcc/lib/gcc/current/libgfortran.5.dylib', new = '@rpath/libgfortran.5.dylib' },
+    #{ old = '/usr/local/opt/gcc/lib/gcc/current/libgcc_s.1.1.dylib',  new = '@rpath/libgcc_s.1.1.dylib' },
+    #{ old = '/usr/local/opt/gcc/lib/gcc/current/libquadmath.0.dylib', new = '@rpath/libquadmath.0.dylib' },
+    # gcc 13
+    { old = '/usr/local/opt/gcc@13/lib/gcc/13/libgfortran.5.dylib', new = '@rpath/libgfortran.5.dylib' },
+    { old = '/usr/local/opt/gcc@13/lib/gcc/13/libgcc_s.1.1.dylib',  new = '@rpath/libgcc_s.1.1.dylib' },
+    { old = '/usr/local/opt/gcc@13/lib/gcc/13/libquadmath.0.dylib', new = '@rpath/libquadmath.0.dylib' },
 ]
 dependent-libs.macos.arm.gfortran = [
-    { old = '/opt/homebrew/opt/gcc/lib/gcc/current/libgfortran.5.dylib', new = '@rpath/libgfortran.5.dylib' },
-    { old = '/opt/homebrew/opt/gcc/lib/gcc/current/libquadmath.0.dylib', new = '@rpath/libquadmath.0.dylib' },
+    # current gcc
+    #{ old = '/opt/homebrew/opt/gcc/lib/gcc/current/libgfortran.5.dylib', new = '@rpath/libgfortran.5.dylib' },
+    #{ old = '/opt/homebrew/opt/gcc/lib/gcc/current/libquadmath.0.dylib', new = '@rpath/libquadmath.0.dylib' },
+    # gcc 13
+    { old = '/opt/homebrew/opt/gcc@13/lib/gcc/13/libgfortran.5.dylib', new = '@rpath/libgfortran.5.dylib' },
+    { old = '/opt/homebrew/opt/gcc@13/lib/gcc/13/libquadmath.0.dylib', new = '@rpath/libquadmath.0.dylib' },
 ]
 # Examples of GitHub values for Python 3.11
 #python-lib.macos = '`python3-config --ldflags --embed`'