diff --git a/README.md b/README.md
index 631f1a6..2165262 100644
--- a/README.md
+++ b/README.md
@@ -4,4 +4,4 @@ Install from the command line:
 
     raco pkg install git://github.com/mbutterick/aoc-racket/
 
-Explanations will be installed automatically as part of the Scibble documentation.
+Explanations will be installed automatically as part of the Scribble documentation.