diff --git a/requirements.txt b/requirements.txt
index 5c908d6..43c9d85 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ pytest-cov>=2.5.1,<3
 pytest-pythonpath>=0.7.2,<1
 setuptools>=38.4.0
 Sphinx>=2.2.0
-sphinx-rtd-theme>=0.4.3,<1
+sphinx-rtd-theme==3.0.1
 tox>=3.0.0,<4
 twine==3.4.2
 pre-commit>=2.2.0