diff --git a/20231005/hp-uebung-20231005.pdf b/20231005/hp-uebung-20231005.pdf
index 849ca3df582a3b8847019670eb96192886fb2a11..10c4f27a779cd0ecaef32fe57f4791db8567dd85 100644
Binary files a/20231005/hp-uebung-20231005.pdf and b/20231005/hp-uebung-20231005.pdf differ
diff --git a/20231005/hp-uebung-20231005.tex b/20231005/hp-uebung-20231005.tex
index 2cb5aa659af6c85f19f500238664f853f3bb6400..4e39f5655a99ea03b63c0a4be298b1a37c06ac08 100644
--- a/20231005/hp-uebung-20231005.tex
+++ b/20231005/hp-uebung-20231005.tex
@@ -68,8 +68,8 @@
   \begin{lstlisting}[style=cmd]
     gcc -Wall -O hello.c -o hello
     ./hello
-    gcc -Wall -O $(pkg-config --cflags gtk+-3.0) hello-gtk.c \
-        $(pkg-config --libs gtk+-3.0) -o hello-gtk
+    gcc -Wall -O $(pkg-config --cflags gtk4) hello-gtk.c \
+        $(pkg-config --libs gtk4) -o hello-gtk
     ./hello-gtk
   \end{lstlisting}