diff --git a/.gitignore b/.gitignore
index a9a9f33..44a83dc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,7 @@
 # Racket compiled files
 compiled/
+# Generated documentation
+/doc/
 
 # common backups, autosaves, lock files, OS meta-files
 *~