diff --git a/python-hpack.spec b/python-hpack.spec
index b71d161..7f476e2 100644
--- a/python-hpack.spec
+++ b/python-hpack.spec
@@ -24,6 +24,7 @@ Summary:        Pure-Python HPACK header compression
 License:        MIT
 URL:            https://github.com/python-hyper/hpack
 Source0:        https://files.pythonhosted.org/packages/source/h/hpack/hpack-%{version}.tar.gz
+# Content of https://github.com/python-hyper/hpack/tree/master/test/test_fixtures
 Source1:        test_fixtures.tar.xz
 Patch0:         healthcheck.patch
 BuildRequires:  %{python_module hypothesis}