diff --git a/README.md b/README.md
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@@ -79,6 +79,7 @@ the theory and methods. We recommend strongly to form small projects of 2-3 part
 6. The course is part of the CS Master of Science program, but is open to other bachelor and Master of Science students at the University of Oslo;
 7. Grading scale: Grades are awarded on a scale from A to F, where A is the best grade and F is a fail;
 8. The course will be offered as a FYS-MAT4155 (Master of Science level) and a FYS-MAT3155 (senior undergraduate) course.
+9. We use Piazza for course communication, a special link on how to register to Piazza con be found on the official University of Oslo page for the course. Slack is also used for course communication. 
 
 
 ## Possible textbooks