diff --git a/bin/code42cli_completer b/bin/code42cli_completer
index d893c11f3..3b2873763 100755
--- a/bin/code42cli_completer
+++ b/bin/code42cli_completer
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 # file inspired from awscli https://github.com/aws/aws-cli/blob/develop/bin/aws_completer
 
 import os