diff --git a/.hash b/.hash
index 3e6cd52..45a0ccb 100644
--- a/.hash
+++ b/.hash
@@ -1,7 +1,7 @@
 ainotes.cls,dc59cd4
 fundamentals-of-ai-and-kr/module1,27778b1
-fundamentals-of-ai-and-kr/module2,b179167
-fundamentals-of-ai-and-kr/module3,58eee04
+fundamentals-of-ai-and-kr/module2,f51fdde
+fundamentals-of-ai-and-kr/module3,0d20851
 languages-and-algorithms-for-ai/module2,f23e2ff
 machine-learning-and-data-mining,0f3963d
 statistical-and-mathematical-methods-for-ai,b8b751d
diff --git a/fundamentals-of-ai-and-kr/module2/main.pdf b/fundamentals-of-ai-and-kr/module2/main.pdf
index 2a71d8c..c405ba9 100644
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diff --git a/fundamentals-of-ai-and-kr/module3/main.pdf b/fundamentals-of-ai-and-kr/module3/main.pdf
index 4026e1a..c83dcc6 100644
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