diff --git a/pyproject.toml b/pyproject.toml
index a431e35..b129f6f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -54,7 +54,7 @@ dev = [
     "ruff==0.15.5",
     "syrupy==5.1.0",
     "yamllint==1.38.0",
-    "datamodel-code-generator>=0.28.5,<0.55.0",
+    "datamodel-code-generator>=0.28.5,<0.56.0",
 ]
 
 [tool.hatch.build.targets.sdist]