diff --git a/packages/google-crc32c/scripts/osx/build_python_wheel.sh b/packages/google-crc32c/scripts/osx/build_python_wheel.sh
index 0b9b2da65181..f6ec885b3b13 100755
--- a/packages/google-crc32c/scripts/osx/build_python_wheel.sh
+++ b/packages/google-crc32c/scripts/osx/build_python_wheel.sh
@@ -39,8 +39,8 @@ eval "$(pyenv init --path)"
 
 install_python_pyenv() {
     version=$1
-
-    if [ -z "$(pyenv versions --bare | grep $version)" ]; then
+    escaped_version="${version//./\.}"
+    if ! pyenv versions --bare | grep -q "^${escaped_version}\b"; then
         echo "Python $version is not installed. Installing..."
         pyenv install $version
         echo "Python $version installed."
diff --git a/packages/google-crc32c/scripts/osx/publish_python_wheel.sh b/packages/google-crc32c/scripts/osx/publish_python_wheel.sh
index e5d6ab115b6f..7c156758facd 100755
--- a/packages/google-crc32c/scripts/osx/publish_python_wheel.sh
+++ b/packages/google-crc32c/scripts/osx/publish_python_wheel.sh
@@ -15,7 +15,7 @@
 
 set -eo pipefail
 
-if [ -z "$(pyenv versions --bare | grep 3.10)" ]; then
+if ! pyenv versions --bare | grep -q "^3\.10\b"; then
     echo "Python 3.10 is not installed. Installing..."
     pyenv install 3.10
 fi