diff --git a/setup.py b/setup.py
index 568f409f..963ee835 100644
--- a/setup.py
+++ b/setup.py
@@ -11,7 +11,7 @@
     + crypto_requires
     + [
         "Sphinx>=5.0,<=6.0",
-        "sphinx_rtd_theme==2.0.0",
+        "sphinx_rtd_theme==1.3.0",
         "orjson",
         "pydantic",
     ]