diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index ad06120ee..a6cb4f62a 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -35,3 +35,6 @@ Stands for _**M**isskey **F**lavored **M**arkdown_.
 
 ### Mk
 Stands for _**M**iss**k**ey_.
+
+### SW
+Stands for _**S**ervice**W**orker_.