diff --git a/deploy_new_python_project.sh b/deploy_new_python_project.sh
index d4fe111..083cab0 100755
--- a/deploy_new_python_project.sh
+++ b/deploy_new_python_project.sh
@@ -50,7 +50,7 @@ do
       ;;
     "--project-codename"|"-p")
       shift
-      PROJECT_CODENAME="${1}"
+      PROJECT_CODENAME="${1//-/_}"
       shift
       ;;
     "--version"|"-v")
@@ -134,4 +134,4 @@ do
   sed -i "s/__url__/${URL}/g" "${file}"
   sed -i "s/__license__/${LICENSE}/g" "${file}"
   sed -i "s/__description__/${DESCRIPTION}/g" "${file}"
-done <<< "$(find "${destination_path}/" -type f)"
\ No newline at end of file
+done <<< "$(find "${destination_path}/" -type f)"