diff --git a/Cargo.toml b/Cargo.toml
index e82d9ff..00afd0e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,6 +2,7 @@
 name = "osma-server"
 version = "0.1.0"
 edition = "2021"
+license = "GPL-3.0-only"
 
 [dependencies]
 dotenv = "0.15.0"