diff --git a/pyproject.toml b/pyproject.toml
index 49321a105..62a1f35aa 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -297,7 +297,7 @@ dev = [
     "freezegun==1.2.2",
     "furo==2023.5.20",
     "mypy==1.4.1",
-    "pdm==2.8.0",
+    "pdm==2.8.1",
     "pip_check_reqs==2.4.4",
     "pydocstyle==6.3.0",
     "pyenchant==3.2.2",