diff --git a/library/fastd_key b/library/fastd_key
index 06c76c8..22e43df 100644
--- a/library/fastd_key
+++ b/library/fastd_key
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 EXAMPLES = '''
 # Generates a fastd key