diff --git a/pyproject.toml b/pyproject.toml
index a892f39d..c133e501 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,7 +20,7 @@ classifiers = [
   "Programming Language :: Python :: Implementation :: PyPy",
 ]
 dependencies = [
-  "pydantic~=1.10",
+  "pydantic>=1.10,<3.0",
   "jsonschema~=4.0",
   "PyYAML~=6.0",
   "more-itertools>=8.0,<11.0",