diff --git a/parts/1/notes.md b/parts/1/notes.md
index 7529773..9767352 100644
--- a/parts/1/notes.md
+++ b/parts/1/notes.md
@@ -11,7 +11,7 @@ Exercises:
 * [X] 1.7
 * [X] 1.8
 * [X] 1.9
-* [ ] 1.10
+* [X] 1.10
 * [ ] 1.11
 * [ ] 1.12
 * [ ] 1.13