diff --git a/pyproject.toml b/pyproject.toml
index 0c7914f541..fec403b497 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -2,7 +2,7 @@
 name = "IfcOpenShell"
 version = "0.0.0"
 dependencies = [
-    "black==25.12",
+    "black==26.1.0",
     "ruff==0.14.13",
     "poethepoet",
     "gersemi==0.25.1",