diff --git a/README.md b/README.md
index 95706ba..f8a1afa 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,8 @@
   - c) Java built-in generic Stack
 - VL 3 Aufgabe 2 (Dynamischer Speicher einer Queue)
 - VL 3 Aufgabe 3 (ArrayList vs LinkedList)
-
+- VL 4 Aufgabe 1 (Threads counting)
+- VL 4 Aufgabe 2 (User - Printer)
 
 - keine
 
diff --git a/src/part2/aufg2/files/placeholder b/src/part2/aufg2/files/placeholder
deleted file mode 100644
index e69de29..0000000
diff --git a/src/part3/placeholder b/src/part3/placeholder
deleted file mode 100644
index e69de29..0000000