diff --git a/setup.cfg b/setup.cfg
index afd56e2..01e0e35 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -44,8 +44,8 @@ zip_safe = False
 packages = sphinx_rtd_theme
 python_requires = >=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*
 install_requires = 
-	sphinx >=1.6,<6
-	docutils <0.18
+	sphinx >=1.6,<8
+	docutils <=0.21
 tests_require = 
 	pytest
 
