diff --git a/pyproject.toml b/pyproject.toml
index aacd5af2..b2af2eb7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -72,7 +72,7 @@ sphinx-copybutton = "^0.5.2"
 pytest-cov = "^4.0.0"
 coverage = "^7.2.0"
 black = "23.11.0"
-blackdoc = "0.3.8"
+blackdoc = "0.3.9"
 mypy = "^1.2.0"
 ruff = "0.1.6"
 pre-commit = "^3.3.1"