diff --git a/.hash b/.hash
index 0e18bce..8f69d94 100644
--- a/.hash
+++ b/.hash
@@ -2,6 +2,6 @@ ainotes.cls,dafa14c
 fundamentals-of-ai-and-kr/module1,a2e8cd8
 fundamentals-of-ai-and-kr/module2,ebf66ac
 fundamentals-of-ai-and-kr/module3,0d20851
-languages-and-algorithms-for-ai/module2,ebf66ac
+languages-and-algorithms-for-ai/module2,a629de4
 machine-learning-and-data-mining,dafa14c
 statistical-and-mathematical-methods-for-ai,b8b751d
diff --git a/languages-and-algorithms-for-ai/module2/main.pdf b/languages-and-algorithms-for-ai/module2/main.pdf
index efc8157..ddec277 100644
Binary files a/languages-and-algorithms-for-ai/module2/main.pdf and b/languages-and-algorithms-for-ai/module2/main.pdf differ