diff --git a/bump_version.sh b/bump_version.sh
index e1324b8..bd520bd 100755
--- a/bump_version.sh
+++ b/bump_version.sh
@@ -11,6 +11,9 @@ VERSION_FILE=src/example/_version.py
 HELP_INFORMATION="bump_version.sh (show|major|minor|patch|prerelease|build|finalize)"
 
 old_version=$(sed -n "s/^__version__ = \"\(.*\)\"$/\1/p" $VERSION_FILE)
+# Comment out periods so they are interpreted as periods and don't
+# just match any character
+old_version_regex=${old_version//\./\\\.}
 
 if [ $# -ne 1 ]; then
   echo "$HELP_INFORMATION"
@@ -22,7 +25,7 @@ else
       # A temp file is used to provide compatability with macOS development
       # as a result of macOS using the BSD version of sed
       tmp_file=/tmp/version.$$
-      sed "s/$old_version/$new_version/" $VERSION_FILE > $tmp_file
+      sed "s/$old_version_regex/$new_version/" $VERSION_FILE > $tmp_file
       mv $tmp_file $VERSION_FILE
       git add $VERSION_FILE
       git commit -m"Bump version from $old_version to $new_version"
@@ -34,10 +37,10 @@ else
       # A temp file is used to provide compatability with macOS development
       # as a result of macOS using the BSD version of sed
       tmp_file=/tmp/version.$$
-      sed "s/$old_version/$new_version/" $VERSION_FILE > $tmp_file
+      sed "s/$old_version_regex/$new_version/" $VERSION_FILE > $tmp_file
       mv $tmp_file $VERSION_FILE
       git add $VERSION_FILE
-      git commit -m"Bump version from $old_version to $new_version"
+      git commit -m"Finalize version from $old_version to $new_version"
       git push
       ;;
     show)