diff --git a/.hash b/.hash
index a3bfa18..9ce4d58 100644
--- a/.hash
+++ b/.hash
@@ -12,9 +12,9 @@ year1/image-processing-and-computer-vision/module2,ed95636
 year1/languages-and-algorithms-for-ai/module2,9d6b6aa
 year1/languages-and-algorithms-for-ai/module3,0adfef3
 year1/machine-learning-and-data-mining,79b3324
-year1/statistical-and-mathematical-methods-for-ai,79b3324
+year1/statistical-and-mathematical-methods-for-ai,f79fbee
 year2/artificial-intelligence-in-industry,cff26da
 year2/big-data-analytics-and-text-mining/module1,368d88d
 year2/big-data-analytics-and-text-mining/module2,368d88d
 year2/machine-learning-for-computer-vision,c10f58c
-year2/natural-language-processing,6f2f282
+year2/natural-language-processing,9e8675a
diff --git a/year1/statistical-and-mathematical-methods-for-ai/smm.pdf b/year1/statistical-and-mathematical-methods-for-ai/smm.pdf
index e8f31c2..2c8baca 100644
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diff --git a/year2/natural-language-processing/nlp.pdf b/year2/natural-language-processing/nlp.pdf
index 315e599..6540535 100644
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