diff --git a/data/plugins/language_python.lua b/data/plugins/language_python.lua
index 220ddd54..f7c09ac3 100644
--- a/data/plugins/language_python.lua
+++ b/data/plugins/language_python.lua
@@ -3,7 +3,7 @@ local syntax = require "core.syntax"
 
 syntax.add {
   name = "Python",
-  files = { "%.py$", "%.pyw$", "%.rpy$" },
+  files = { "%.py$", "%.pyw$", "%.rpy$", "%.pyi$" },
   headers = "^#!.*[ /]python",
   comment = "#",
   block_comment = { '"""', '"""' },