diff --git a/background/background.tex b/background/background.tex
index 2f3e4a3..a2149af 100644
--- a/background/background.tex
+++ b/background/background.tex
@@ -623,7 +623,7 @@ \subsection{Involved gdb example}
 
 \begin{enumerate}
 \item \href{http://www.cs.cmu.edu/~gilpin/tutorial/}{Introduction to gdb}
-\item \href{http://www.delorie.com/gnu/docs/gdb/gdb\_56.html}{Memory Content}
+\item \href{https://ftp.gnu.org/old-gnu/Manuals/gdb/html_node/gdb_toc.html}{GDB Manual}
 \item \href{https://www.youtube.com/watch?v=PorfLSr3DDI}{CppCon 2015: Greg Law “Give me 15 minutes & I'll change your view of GDB”}
 \end{enumerate}