diff --git a/pyproject.toml b/pyproject.toml
index 82fe154..087a3d0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,7 +6,7 @@ requires-python = ">=3.13"
 dependencies = [
     "httpx>=0.25.0",
 ]
-license = "GPLv3"
+license = "GPL-3.0"
 
 [project.optional-dependencies]
 cli = ["click>=8.0"]