diff --git a/tests/coverage_dungeon.py b/tests/coverage_dungeon.py
index 97e642d..439edad 100755
--- a/tests/coverage_dungeon.py
+++ b/tests/coverage_dungeon.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 # This is the open-adventure dungeon text coverage report generator. It
 # consumes a YAML description of the dungeon and determines whether the