diff --git a/pyproject.toml b/pyproject.toml
index 7184f4a31fd..ad6f33dc6e5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -80,7 +80,7 @@ pebble = "*"
 psutil = "*"
 pulsar-galaxy-lib = ">=0.15.0.dev0"
 pycryptodome = "*"
-pydantic = {version = "*", extras = ["email"]}
+pydantic = {version = "<2", extras = ["email"]}
 PyJWT = "*"
 pykwalify = "*"
 pylibmagic = "*"