diff --git a/hammer_cli_foreman_admin.gemspec b/hammer_cli_foreman_admin.gemspec
index dc044e2..50f0081 100644
--- a/hammer_cli_foreman_admin.gemspec
+++ b/hammer_cli_foreman_admin.gemspec
@@ -6,7 +6,7 @@ Gem::Specification.new do |s|
   s.name = "hammer_cli_foreman_admin"
   s.authors = ["Lukas Zapletal"]
   s.email = "lzap+git@redhat.com"
-  s.licenses = ["GPL-3.0"]
+  s.licenses = ["GPL-3.0-only"]
   s.homepage = "https://github.com/theforeman/hammer-cli-foreman-admin"
   s.version = HammerCLIForemanAdmin.version.dup
   s.platform = Gem::Platform::RUBY