diff --git a/Mapbase-Credits.md b/Mapbase-Credits.md
index 2db1262..230cce0 100644
--- a/Mapbase-Credits.md
+++ b/Mapbase-Credits.md
@@ -7,7 +7,7 @@ Mapbase was originally created by **Blixibon** and almost all work, ideas, and d
 ***
 ## Open-source work used in Mapbase
 ### [Valve Developer Community](developer.valvesoftware.com)
-Mapbase uses many fix and improvement snippets found on the VDC.
+Mapbase uses many fix and improvement snippets found on the VDC, including [Saul Rennison's dynamic RTT shadow angles](https://developer.valvesoftware.com/wiki/Dynamic_RTT_shadow_angles_in_Source_2007).
 ### [Pull requests from Valve's Source SDK 2013 GitHub repo](https://github.com/ValveSoftware/source-sdk-2013/pulls)
 A few of the pull requests have been incorporated into Mapbase.
 ### [Insolence](https://github.com/95Navigator/insolence-2013), [G-String](https://github.com/Biohazard90/g-string_2013), [Source++](https://github.com/Joshua-Ashton/Source-PlusPlus), [City 17: Episode One](https://github.com/KyleGospo/City-17-Episode-One-Source)