diff --git a/pyproject.toml b/pyproject.toml
index c85857f0..b4bc7999 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -41,7 +41,7 @@ redis = ">=3.5.3,<7.0.0"
 pydantic = ">=2.0.0,<3.0.0"
 click = "^8.0.1"
 types-redis = ">=3.5.9,<5.0.0"
-python-ulid = "^1.0.3"
+python-ulid = ">=1.0.3, <=3.1.0"
 typing-extensions = "^4.4.0"
 hiredis = ">=2.2.3,<4.0.0"
 more-itertools = ">=8.14,<11.0"
diff --git a/tests/test_json_model.py b/tests/test_json_model.py
index d59a30ee..5a3d5ed1 100644
--- a/tests/test_json_model.py
+++ b/tests/test_json_model.py
@@ -1528,7 +1528,9 @@ class Product(JsonModel, index=True):
         name: str = Field(index=True, sortable=True)  # TAG field with sortable
         category: str = Field(index=True, sortable=True)  # TAG field with sortable
         price: int = Field(index=True, sortable=True)  # NUMERIC field with sortable
-        tags: List[str] = Field(index=True, sortable=True)  # TAG field (list) with sortable
+        tags: List[str] = Field(
+            index=True, sortable=True
+        )  # TAG field (list) with sortable
 
         class Meta:
             global_key_prefix = key_prefix
@@ -1543,9 +1545,13 @@ class Meta:
     await Migrator().run()
 
     # Create test data
-    product1 = Product(name="Zebra", category="Animals", price=100, tags=["wild", "africa"])
+    product1 = Product(
+        name="Zebra", category="Animals", price=100, tags=["wild", "africa"]
+    )
     product2 = Product(name="Apple", category="Fruits", price=50, tags=["red", "sweet"])
-    product3 = Product(name="Banana", category="Fruits", price=30, tags=["yellow", "sweet"])
+    product3 = Product(
+        name="Banana", category="Fruits", price=30, tags=["yellow", "sweet"]
+    )
 
     await product1.save()
     await product2.save()