diff --git a/pyproject.toml b/pyproject.toml
index c38ab0d..c1acc9f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -26,7 +26,7 @@ dependencies = []
 [project.optional-dependencies]
 dev = [
     "attribution==1.6.2",
-    "black==23.3.0",
+    "black==23.7.0",
     "flit==3.8.0",
     "mypy==1.2.0",
     "ufmt==2.1.0",