diff --git a/.hash b/.hash
index 34a0be2..0e18bce 100644
--- a/.hash
+++ b/.hash
@@ -1,7 +1,7 @@
 ainotes.cls,dafa14c
 fundamentals-of-ai-and-kr/module1,a2e8cd8
-fundamentals-of-ai-and-kr/module2,42cd9bd
+fundamentals-of-ai-and-kr/module2,ebf66ac
 fundamentals-of-ai-and-kr/module3,0d20851
-languages-and-algorithms-for-ai/module2,a062cb0
+languages-and-algorithms-for-ai/module2,ebf66ac
 machine-learning-and-data-mining,dafa14c
 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 214439f..0b1fce5 100644
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diff --git a/languages-and-algorithms-for-ai/module2/main.pdf b/languages-and-algorithms-for-ai/module2/main.pdf
index 7dc692e..efc8157 100644
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