diff --git a/.hash b/.hash
index 02082c0..4f06ef6 100644
--- a/.hash
+++ b/.hash
@@ -1,7 +1,7 @@
 ainotes.cls,dc59cd4
-fundamentals-of-ai-and-kr/module1,1317552
+fundamentals-of-ai-and-kr/module1,ba8009b
 fundamentals-of-ai-and-kr/module2,42cd9bd
 fundamentals-of-ai-and-kr/module3,0d20851
 languages-and-algorithms-for-ai/module2,a062cb0
-machine-learning-and-data-mining,0f3963d
+machine-learning-and-data-mining,ba8009b
 statistical-and-mathematical-methods-for-ai,b8b751d
diff --git a/fundamentals-of-ai-and-kr/module1/main.pdf b/fundamentals-of-ai-and-kr/module1/main.pdf
index 95b6406..fc54bb4 100644
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diff --git a/machine-learning-and-data-mining/main.pdf b/machine-learning-and-data-mining/main.pdf
index 0ebfd34..bcda9fc 100644
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