diff --git a/.hash b/.hash
index adb0432..5085625 100644
--- a/.hash
+++ b/.hash
@@ -1,7 +1,7 @@
 ainotes.cls,dc59cd4
 fundamentals-of-ai-and-kr/module1,a90b33a
-fundamentals-of-ai-and-kr/module2,90685a4
+fundamentals-of-ai-and-kr/module2,d08b0e7
 fundamentals-of-ai-and-kr/module3,58eee04
-languages-and-algorithms-for-ai/module2,7f3bc2d
+languages-and-algorithms-for-ai/module2,f23e2ff
 machine-learning-and-data-mining,be45bdc
 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 94dafa9..7abf481 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 7f9bc4e..c63ac11 100644
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