diff --git a/collects/teachpack/2htdp/scribblings/.gitignore b/collects/teachpack/2htdp/scribblings/.gitignore
new file mode 100644
index 0000000000..8617481f53
--- /dev/null
+++ b/collects/teachpack/2htdp/scribblings/.gitignore
@@ -0,0 +1 @@
+output.txt