diff --git a/pyproject.toml b/pyproject.toml
index 6c5ce10373bf7c573216ae4c60f7c7b9fc6dc8e3..20b2814200a1d6706a586f8a54da3393ad8408bd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,7 +25,7 @@ requests = "^2"
 Sphinx = "^4.5.0 || ^8.0.0"
 coverage = "^6.3.2 || ^7.0.0"
 myst-parser = "^0.17.0 || ^0.19.0 || ^1.0.0"
-sphinx-rtd-theme = "^1.0.0"
+sphinx-rtd-theme = "^1.0.0 || ^3.0.0"
 
 [build-system]
 requires = ["poetry-core>=1.0.0"]