diff --git a/CREDITS.md b/CREDITS.md
index bf3ac03..99e4c59 100644
--- a/CREDITS.md
+++ b/CREDITS.md
@@ -30,6 +30,8 @@ Some elements have been modified from the sources used. If you use some elements
 
 - Carnelian Bridge Background based on [Advance Starlight Zone](https://www.spriters-resource.com/custom_edited/sonicthehedgehogcustoms/sheet/18270/) by Skylight
 
+- Tails Lab Background based on [City Escape Advance](https://www.spriters-resource.com/custom_edited/sonicthehedgehogcustoms/sheet/18187/) by Bold the Hedgehog, Blaze, Dan Sidney and Flare.
+
 ### HUD elements used
 
 - [Sonic Heroes HUD](https://www.spriters-resource.com/custom_edited/sonicthehedgehogcustoms/sheet/104761/),  [Sonic Adventure 2](https://www.spriters-resource.com/custom_edited/sonicthehedgehogcustoms/sheet/104763/) pixel versions by [FieryExplosion](https://www.spriters-resource.com/submitter/FieryExplosion/)