diff --git a/pyproject.toml b/pyproject.toml
index 26f51d04..5a3ae60a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -48,7 +48,7 @@ mypy = "^0.800"
 typeguard = "^2.10.0"
 xdoctest = {extras = ["colors"], version = "^0.15.0"}
 sphinx = "^3.3.1"
-sphinx-autobuild = "^2020.9.1"
+sphinx-autobuild = "^2021.3.14"
 pre-commit = "^2.9.2"
 black = "^20.8b1"
 flake8 = "^3.8.4"