diff --git a/tests/unit/fixtures.py b/tests/unit/fixtures.py
index 5cd18f49bc0..cfcc1636b18 100644
--- a/tests/unit/fixtures.py
+++ b/tests/unit/fixtures.py
@@ -26,6 +26,7 @@ def model_node():
         metrics=[],
         depends_on=DependsOn(),
         description="",
+        primary_key=[],
         database="test_db",
         schema="test_schema",
         alias="bar",
diff --git a/tests/unit/test_contracts_graph_compiled.py b/tests/unit/test_contracts_graph_compiled.py
index e345899e4d6..e0228cc28f6 100644
--- a/tests/unit/test_contracts_graph_compiled.py
+++ b/tests/unit/test_contracts_graph_compiled.py
@@ -149,6 +149,7 @@ def basic_compiled_dict():
         "depends_on": {"macros": [], "nodes": []},
         "database": "test_db",
         "description": "",
+        "primary_key": [],
         "schema": "test_schema",
         "alias": "bar",
         "tags": [],
diff --git a/tests/unit/test_contracts_graph_parsed.py b/tests/unit/test_contracts_graph_parsed.py
index 3a1861af462..7a62c394b22 100644
--- a/tests/unit/test_contracts_graph_parsed.py
+++ b/tests/unit/test_contracts_graph_parsed.py
@@ -167,6 +167,7 @@ def base_parsed_model_dict():
         "depends_on": {"macros": [], "nodes": []},
         "database": "test_db",
         "description": "",
+        "primary_key": [],
         "schema": "test_schema",
         "alias": "bar",
         "tags": [],
@@ -220,6 +221,7 @@ def basic_parsed_model_object():
         metrics=[],
         depends_on=DependsOn(),
         description="",
+        primary_key=[],
         database="test_db",
         schema="test_schema",
         alias="bar",
@@ -274,6 +276,7 @@ def complex_parsed_model_dict():
         "depends_on": {"macros": [], "nodes": ["model.test.bar"]},
         "database": "test_db",
         "description": "My parsed node",
+        "primary_key": [],
         "schema": "test_schema",
         "alias": "bar",
         "tags": ["tag"],