diff --git a/pyproject.toml b/pyproject.toml
index 61164e3b..14fd687a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -66,7 +66,7 @@ dependencies = [
 dev = [
   # Dev tools and testing
   "black ==25.1.0",
-  "blackdoc ==0.4.1",
+  "blackdoc ==0.4.3",
   "bump-my-version >=1.2.0",
   "coverage >=7.5.0",
   "filelock >=3.14.0",