diff --git a/lib/spdx/version.rb b/lib/spdx/version.rb
index d5a9a44..7979a24 100644
--- a/lib/spdx/version.rb
+++ b/lib/spdx/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Spdx
-  VERSION = "2.0.3"
+  VERSION = "2.0.4"
 end
diff --git a/lib/spdx_grammar.rb b/lib/spdx_grammar.rb
index 9a7c8d9..568bcde 100644
--- a/lib/spdx_grammar.rb
+++ b/lib/spdx_grammar.rb
@@ -17,9 +17,15 @@ class With < Treetop::Runtime::SyntaxNode
   end
 
   class None < Treetop::Runtime::SyntaxNode
+    def licenses
+      []
+    end
   end
 
   class NoAssertion < Treetop::Runtime::SyntaxNode
+    def licenses
+      []
+    end
   end
 
   class License < Treetop::Runtime::SyntaxNode
diff --git a/spec/spdx_spec.rb b/spec/spdx_spec.rb
index 5fb9bd7..92c8c44 100644
--- a/spec/spdx_spec.rb
+++ b/spec/spdx_spec.rb
@@ -208,4 +208,13 @@
       expect(Spdx.alias_exists?("FAKEALIAS")).to be false
     end
   end
+  context "licenses" do
+    it "returns a list of possible licenses" do
+      expect(Spdx.parse_spdx("MIT OR MPL-2.0").licenses).to eq ["MIT", "MPL-2.0"]
+    end
+    it "returns empty array for NONE or NOASSERTION" do
+      expect(Spdx.parse_spdx("NONE").licenses).to eq []
+      expect(Spdx.parse_spdx("NOASSERTION").licenses).to eq []
+    end
+  end
 end