diff --git a/setup.py b/setup.py
index 6a5e317..0011fe2 100644
--- a/setup.py
+++ b/setup.py
@@ -30,9 +30,9 @@ setup(
     install_requires=[
         "pyyaml",
         "docutils>=0.15",
-        "sphinx>=2,<4",
+        "sphinx>=2",
         "click",
-        "pydata-sphinx-theme~=0.6.0",
+        "pydata-sphinx-theme>=0.6.0",
         "beautifulsoup4>=4.6.1,<5",
         'importlib-resources>=3.0,<3.5; python_version < "3.7"',
     ],