diff --git a/pyproject.toml b/pyproject.toml
index 69ca4dd6a13..adb7b28d0f0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -35,7 +35,7 @@ classifiers = [
 
 [tool.poetry.dependencies]
 python = ">=3.8,<4.0"
-pydantic = ">=1.10.2"
+pydantic = ">=1.10.2,<2.0.0"
 numpy = ">=1.17.3"
 protobuf = { version = ">=3.19.0", optional = true }
 torch = { version = ">=1.0.0", optional = true }