diff --git a/requirements.txt b/requirements.txt
index edaedaa..c3d403f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 -e git://github.com/drj11/pypng.git@master#egg=pypng
 
-# for the map editor
-PIL
+# for the map editor, pillow instead of PIL
+pillow
 
 # testing
 mock