diff --git a/.hash b/.hash
index 4f06ef6..17a6f5d 100644
--- a/.hash
+++ b/.hash
@@ -1,7 +1,7 @@
 ainotes.cls,dc59cd4
-fundamentals-of-ai-and-kr/module1,ba8009b
+fundamentals-of-ai-and-kr/module1,a2e8cd8
 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,ba8009b
+machine-learning-and-data-mining,0f3963d
 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 fc54bb4..2d1ddd5 100644
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diff --git a/machine-learning-and-data-mining/main.pdf b/machine-learning-and-data-mining/main.pdf
index bcda9fc..1d63e49 100644
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