diff --git a/.hash b/.hash
index 3e1ce9b..f3a119e 100644
--- a/.hash
+++ b/.hash
@@ -14,9 +14,9 @@ year1/languages-and-algorithms-for-ai/module3,0adfef3
 year1/machine-learning-and-data-mining,79b3324
 year1/statistical-and-mathematical-methods-for-ai,f79fbee
 year2/artificial-intelligence-in-industry,eb1b633
-year2/distributed-autonomous-systems,6d4113a
+year2/distributed-autonomous-systems,f7dfdd1
 year2/ethics-in-ai/module1,f7e815c
-year2/ethics-in-ai/module2,5484e66
+year2/ethics-in-ai/module2,548b052
 year2/ethics-in-ai/module3,617fd5b
 year2/machine-learning-for-computer-vision,8d57b81
 year2/natural-language-processing,6f03be6
diff --git a/year2/distributed-autonomous-systems/das.pdf b/year2/distributed-autonomous-systems/das.pdf
index ddcc275..6fc2cb0 100644
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diff --git a/year2/ethics-in-ai/module2/ethics2.pdf b/year2/ethics-in-ai/module2/ethics2.pdf
index 4ecf57e..38b7dfe 100644
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