diff --git a/bin/detect b/bin/detect
index 2d3b9b0df..e4d9b3793 100755
--- a/bin/detect
+++ b/bin/detect
@@ -28,7 +28,7 @@ if [ "$CF_STACK" == "cflinuxfs4" ]; then
   mkdir -p "${PYTHON_DIR}"
   source "$BP/bin/install-python" "$PYTHON_DIR" "$BP" &> /dev/null
 
-  RUBY_DIR="/tmp/ruby"
+  RUBY_DIR="/tmp/php-buildpack/ruby"
   mkdir -p "${RUBY_DIR}"
   source "$BP/bin/install-ruby" "$RUBY_DIR" "$BP" &> /dev/null
 fi
diff --git a/bin/install-ruby b/bin/install-ruby
index c57d44888..cb3d1f94e 100755
--- a/bin/install-ruby
+++ b/bin/install-ruby
@@ -8,10 +8,10 @@ function main() {
   local buildpack_dir="$2"
   local ruby_dep_name=$(get_ruby_from_manifest "$buildpack_dir")
 
-  if [[ ! -d "/tmp/ruby/bin" ]]; then
+  if [[ ! -d "/tmp/php-buildpack/ruby/bin" ]]; then
     setup_ruby "$ruby_dep_name" "$install_dir" "$buildpack_dir"
-  elif [[ $install_dir != "/tmp/ruby" ]]; then
-    cp -r "/tmp/ruby/." "$install_dir"
+  elif [[ $install_dir != "/tmp/php-buildpack/ruby" ]]; then
+    cp -r "/tmp/php-buildpack/ruby/." "$install_dir"
   fi
   export PATH="$install_dir/bin:${PATH:-}"
   alias ruby=ruby3
diff --git a/bin/release b/bin/release
index 57eab4f5f..86fd58967 100755
--- a/bin/release
+++ b/bin/release
@@ -30,7 +30,7 @@ if [ "$CF_STACK" == "cflinuxfs4" ]; then
   mkdir -p "${PYTHON_DIR}"
   source "$BP/bin/install-python" "$PYTHON_DIR" "$BP" &> /dev/null
 
-  RUBY_DIR="/tmp/ruby"
+  RUBY_DIR="/tmp/php-buildpack/ruby"
   mkdir -p "${RUBY_DIR}"
   source "$BP/bin/install-ruby" "$RUBY_DIR" "$BP" &> /dev/null
 fi