diff --git a/.hash b/.hash
index f4fcbd4..43d4a61 100644
--- a/.hash
+++ b/.hash
@@ -1,7 +1,7 @@
 ainotes.cls,4b2f613
-fundamentals-of-ai-and-kr/module1,9e25277
-fundamentals-of-ai-and-kr/module2,4b2f613
+fundamentals-of-ai-and-kr/module1,a7933cf
+fundamentals-of-ai-and-kr/module2,a7933cf
 fundamentals-of-ai-and-kr/module3,4b2f613
-languages-and-algorithms-for-ai/module2,4b2f613
+languages-and-algorithms-for-ai/module2,a7933cf
 machine-learning-and-data-mining,4b2f613
-statistical-and-mathematical-methods-for-ai,4b2f613
+statistical-and-mathematical-methods-for-ai,a7933cf
diff --git a/fundamentals-of-ai-and-kr/module1/main.pdf b/fundamentals-of-ai-and-kr/module1/main.pdf
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index c5cc545..4fa06b9 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 202af2a..4de17b7 100644
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diff --git a/statistical-and-mathematical-methods-for-ai/main.pdf b/statistical-and-mathematical-methods-for-ai/main.pdf
index 9188b7b..85c97cd 100644
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