diff --git a/pyproject.toml b/pyproject.toml
index b06a8a2e..101323e2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -73,6 +73,15 @@ dependencies = [
     "ruff",
 ]
 
+[[tool.hatch.envs.default.matrix]]
+pydantic = ["v1", "v2"]
+
+[tool.hatch.envs.default.overrides]
+matrix.pydantic.extra-dependencies = [
+  {value = "pydantic<2.0", if = ["v1"]},
+  {value = "pydantic>=2.0", if = ["v2"]},
+]
+
 [tool.hatch.envs.default.scripts]
 test = "pytest --cov=fastapi_users/ --cov-report=term-missing --cov-fail-under=100"
 test-cov-xml = "pytest --cov=fastapi_users/ --cov-report=xml --cov-fail-under=100"