diff --git a/.hash b/.hash
index b7918ee..d521cf5 100644
--- a/.hash
+++ b/.hash
@@ -1,6 +1,6 @@
 ainotes.cls,dc59cd4
 fundamentals-of-ai-and-kr/module1,8690306
-fundamentals-of-ai-and-kr/module2,2ef29c7
+fundamentals-of-ai-and-kr/module2,3763967
 fundamentals-of-ai-and-kr/module3,58eee04
 languages-and-algorithms-for-ai/module2,0dff0b4
 machine-learning-and-data-mining,098bb90
diff --git a/fundamentals-of-ai-and-kr/module2/main.pdf b/fundamentals-of-ai-and-kr/module2/main.pdf
index a251316..dbe5a6d 100644
Binary files a/fundamentals-of-ai-and-kr/module2/main.pdf and b/fundamentals-of-ai-and-kr/module2/main.pdf differ