diff --git a/Appendix-B---References.md b/Appendix-B---References.md
index cc48db3..ba4d38b 100644
--- a/Appendix-B---References.md
+++ b/Appendix-B---References.md
@@ -31,9 +31,12 @@ If you would like to submit a resource link to be added to this list, please pos
 ### :small_orange_diamond: Tor
 
 * [The Tor Blog (TBB)](https://blog.torproject.org/category/tags/tbb) - **h**ttps://blog.torproject.org/category/tags/tbb
-* [Tor Browser Tickets](https://trac.torproject.org/projects/tor/report/38) - **h**ttps://trac.torproject.org/projects/tor/report/38
-   * [Fingerprinting](https://trac.torproject.org/projects/tor/query?keywords=~tbb-fingerprinting) - **h**ttps://trac.torproject.org/projects/tor/query?keywords=~tbb-fingerprinting
 * [The Design and Implementation of the Tor Browser](https://www.torproject.org/projects/torbrowser/design/) - **h**ttps://www.torproject.org/projects/torbrowser/design/
+* [Tor Browser Tickets](https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues) - **h**ttps://gitlab.torproject.org/tpo/applications/tor-browser/-/issues
+* [Fingerprinting](https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues?scope=all&utf8=✓&state=opened&label_name[]=Fingerprinting) - **h**ttps://gitlab.torproject.org/tpo/applications/tor-browser/-/issues?scope=all&utf8=✓&state=opened&label_name[]=Fingerprinting
+* ⚠️ **Obsolete**: trac.torpoject: locked June 2020, server will be discontinued Dec 2020
+  * [Tor Browser Tickets](https://trac.torproject.org/projects/tor/report/38) - **h**ttps://trac.torproject.org/projects/tor/report/38
+  * [Fingerprinting](https://trac.torproject.org/projects/tor/query?keywords=~tbb-fingerprinting) - **h**ttps://trac.torproject.org/projects/tor/query?keywords=~tbb-fingerprinting
 
 ### :small_orange_diamond: Other