diff --git a/kokoro/macos/php74/build.sh b/kokoro/macos/php74/build.sh
index b9f7de8f372c..ff3965756c77 100755
--- a/kokoro/macos/php74/build.sh
+++ b/kokoro/macos/php74/build.sh
@@ -12,13 +12,9 @@ source kokoro/macos/prepare_build_macos_rc
 brew install coreutils php@7.4
 
 # Configure path
-HOMEBREW_PREFIX=$(brew --prefix)
 PHP_FOLDER=$(find $HOMEBREW_PREFIX -type d -regex ".*php.*/7.4.[0-9]*")
 test ! -z "$PHP_FOLDER"
 export PATH="$PHP_FOLDER/bin:$PATH"
 
-# Fix missing pcre2.h in homebrew's PHP
-#ln -s $(find $HOMEBREW_PREFIX/Cellar/pcre2 -name pcre2.h) $PHP_FOLDER/include/php/ext/pcre/pcre2.h
-
 # Test
 ./tests.sh php_mac
diff --git a/kokoro/macos/php80/build.sh b/kokoro/macos/php80/build.sh
index 1b4767b78a10..84e2c464ef78 100755
--- a/kokoro/macos/php80/build.sh
+++ b/kokoro/macos/php80/build.sh
@@ -12,13 +12,9 @@ source kokoro/macos/prepare_build_macos_rc
 brew install coreutils php@8.0
 
 # Configure path
-HOMEBREW_PREFIX=$(brew --prefix)
 PHP_FOLDER=$(find $HOMEBREW_PREFIX -type d -regex ".*php.*/8.0.[0-9]*")
 test ! -z "$PHP_FOLDER"
 export PATH="$PHP_FOLDER/bin:$PATH"
 
-# Fix missing pcre2.h in homebrew's PHP
-ln -s $(find $HOMEBREW_PREFIX/Cellar/pcre2 -name pcre2.h) $PHP_FOLDER/include/php/ext/pcre/pcre2.h
-
 # Test
 ./tests.sh php_mac
diff --git a/kokoro/macos/prepare_build_macos_rc b/kokoro/macos/prepare_build_macos_rc
index 0bc777979400..7ec2832b8596 100755
--- a/kokoro/macos/prepare_build_macos_rc
+++ b/kokoro/macos/prepare_build_macos_rc
@@ -4,9 +4,10 @@
 
 set -eux
 
+export HOMEBREW_PREFIX=$(brew --prefix)
+
 ##
 # Select Xcode version
-
 export DEVELOPER_DIR=/Applications/Xcode_13.3.1.app/Contents/Developer
 sudo xcode-select -s "${DEVELOPER_DIR}"
 
@@ -21,14 +22,19 @@ if [[ "${KOKORO_INSTALL_TOX:-}" == "yes" ]] ; then
   sudo python3 -m pip install --upgrade pip tox
 fi
 
-# "Install" valgrind
+##
+# Setup RVM
+if [[ "${KOKORO_INSTALL_RVM:-}" == "yes" ]] ; then
+    git config --global --add safe.directory $HOMEBREW_PREFIX/Library/Taps/homebrew/homebrew-cask
+    git config --global --add safe.directory $HOMEBREW_PREFIX/Library/Taps/homebrew/homebrew-core
+    git config --global --add safe.directory $HOMEBREW_PREFIX/Library/Taps/homebrew/homebrew-services
+    sudo chown -R $(whoami) $HOME/.rvm/
+fi
+
+# "Install" valgrind if it doesn't exist
 ##
 if [ ! -x "$(command -v valgrind)" ]; then
     echo "#! /bin/bash" > valgrind
     chmod ug+x valgrind
     sudo mv valgrind /usr/local/bin/valgrind
 fi
-
-git config --global --add safe.directory /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core
-git config --global --add safe.directory /usr/local/Homebrew/Library/Taps/homebrew/homebrew-cask
-sudo chown -R $(whoami) $HOME/.rvm/
diff --git a/kokoro/macos/ruby25/build.sh b/kokoro/macos/ruby25/build.sh
index 38e90aa75c52..48c894081b8d 100755
--- a/kokoro/macos/ruby25/build.sh
+++ b/kokoro/macos/ruby25/build.sh
@@ -6,6 +6,7 @@
 cd $(dirname $0)/../../..
 
 # Prepare worker environment to run tests
+KOKORO_INSTALL_RVM=yes
 source kokoro/macos/prepare_build_macos_rc
 
 ./tests.sh ruby25
diff --git a/kokoro/macos/ruby26/build.sh b/kokoro/macos/ruby26/build.sh
index 6c33ed0a7e66..1b94fe1b5568 100755
--- a/kokoro/macos/ruby26/build.sh
+++ b/kokoro/macos/ruby26/build.sh
@@ -6,6 +6,7 @@
 cd $(dirname $0)/../../..
 
 # Prepare worker environment to run tests
+KOKORO_INSTALL_RVM=yes
 source kokoro/macos/prepare_build_macos_rc
 
 ./tests.sh ruby26
diff --git a/kokoro/macos/ruby27/build.sh b/kokoro/macos/ruby27/build.sh
index 16bcbd6cbd6f..baebdb792a6a 100755
--- a/kokoro/macos/ruby27/build.sh
+++ b/kokoro/macos/ruby27/build.sh
@@ -6,6 +6,7 @@
 cd $(dirname $0)/../../..
 
 # Prepare worker environment to run tests
+KOKORO_INSTALL_RVM=yes
 source kokoro/macos/prepare_build_macos_rc
 
 ./tests.sh ruby27
diff --git a/kokoro/macos/ruby30/build.sh b/kokoro/macos/ruby30/build.sh
index 5b4f6133a72d..b1e0641c96e1 100755
--- a/kokoro/macos/ruby30/build.sh
+++ b/kokoro/macos/ruby30/build.sh
@@ -6,6 +6,7 @@
 cd $(dirname $0)/../../..
 
 # Prepare worker environment to run tests
+KOKORO_INSTALL_RVM=yes
 source kokoro/macos/prepare_build_macos_rc
 
 ./tests.sh ruby30
diff --git a/kokoro/macos/ruby31/build.sh b/kokoro/macos/ruby31/build.sh
index 198a86150a34..1b5a5a5a60eb 100644
--- a/kokoro/macos/ruby31/build.sh
+++ b/kokoro/macos/ruby31/build.sh
@@ -6,6 +6,7 @@
 cd $(dirname $0)/../../..
 
 # Prepare worker environment to run tests
+KOKORO_INSTALL_RVM=yes
 source kokoro/macos/prepare_build_macos_rc
 
 ./tests.sh ruby31