diff --git a/aegisub/automation/tests/runner.moon b/aegisub/automation/tests/runner.moon
index 8af7b1a01..4c2c979e2 100644
--- a/aegisub/automation/tests/runner.moon
+++ b/aegisub/automation/tests/runner.moon
@@ -16,6 +16,7 @@ require 'lunatest'
 require 'lfs'
 
 package.path ..= 'include/?.lua;'
+package.moonpath ..= 'include/?.moon;'
 
 for file in lfs.dir 'tests/modules'
   require "tests.modules.#{file\gsub '\.[^.]+$', ''}" unless file\sub(1, 1) == '.'