diff --git a/README.md b/README.md
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 **WWW**: http://drizzt.home.amu.edu.pl/
 
-**Dyżury**: wtorek (12.00-13.00); czwartek (10.00-11.00)
+**Dyżury**: wtorek (12.00-13.00); czwartek (12.00-13.00)
 
 ## Literatura 
 1.	Beeley, C. (2018). Web Application Development with R Using Shiny: Build stunning graphics and interactive data visualizations to deliver cutting-edge analytics. Packt Publishing.