diff --git a/src/turingsim.gmo b/src/turingsim.gmo
index 7d62cef..0fdeac3 100644
--- a/src/turingsim.gmo
+++ b/src/turingsim.gmo
@@ -4,6 +4,8 @@ a quick and dirty turing machine simulator, written in C89.
 
 # the code
 
+=> https://tildegit.org/sejo/turingsim turingsim git repository
+
 ```
 #include <stdio.h>