diff --git a/Smalltalk.gitignore b/Smalltalk.gitignore
index 75272b23..943995e1 100644
--- a/Smalltalk.gitignore
+++ b/Smalltalk.gitignore
@@ -13,6 +13,10 @@ SqueakDebug.log
 # Monticello package cache
 /package-cache
 
+# playground cache
+/play-cache
+/play-stash
+
 # Metacello-github cache
 /github-cache
 github-*.zip