diff --git a/dbt_meshify/storage/yaml_editors.py b/dbt_meshify/storage/yaml_editors.py
index bf3b32f..bedb7f5 100644
--- a/dbt_meshify/storage/yaml_editors.py
+++ b/dbt_meshify/storage/yaml_editors.py
@@ -98,9 +98,9 @@ def add_model_contract_to_yml(
         # isolate the columns from the existing model entry
         yml_cols: List[Dict] = model_yml.get("columns", [])
         catalog_cols = model_catalog.columns or {} if model_catalog else {}
+        catalog_cols = {k.lower(): v for k, v in catalog_cols.items()}
 
-        # add the data type to the yml entry for columns that are in yml
-        # import pdb; pdb.set_trace()
+        # add the data type to the yml entry for columns that are in yml        
         yml_cols = [
             {**yml_col, "data_type": catalog_cols[yml_col["name"]].type.lower()}
             for yml_col in yml_cols
diff --git a/tests/fixtures.py b/tests/fixtures.py
index 887ca6d..f90d9f4 100644
--- a/tests/fixtures.py
+++ b/tests/fixtures.py
@@ -25,7 +25,7 @@
             "owner": None,
         },
         "columns": {
-            "id": {"type": "INTEGER", "index": 1, "name": "id", "comment": None},
+            "ID": {"type": "INTEGER", "index": 1, "name": "id", "comment": None},
             "colleague": {"type": "VARCHAR", "index": 2, "name": "colleague", "comment": None},
         },
         "stats": {
@@ -63,6 +63,17 @@
         description: "this is the id column"
 """
 
+model_yml_one_col_one_test = """
+models:
+  - name: shared_model
+    description: "this is a test model"
+    columns:
+      - name: id
+        description: "this is the id column"
+        tests:
+          - unique
+"""
+
 model_yml_all_col = """
 models:
   - name: shared_model
@@ -102,6 +113,23 @@
         data_type: varchar
 """
 
+expected_contract_yml_one_col_one_test = """
+models:
+  - name: shared_model
+    config:
+      contract:
+        enforced: true
+    description: "this is a test model"
+    columns:
+      - name: id
+        description: "this is the id column"
+        data_type: integer
+        tests:
+          - unique
+      - name: colleague
+        data_type: varchar
+"""
+
 expected_contract_yml_all_col = """
 models:
   - name: shared_model
diff --git a/tests/unit/test_add_contract_to_yml.py b/tests/unit/test_add_contract_to_yml.py
index 0a9efe5..ca2d13e 100644
--- a/tests/unit/test_add_contract_to_yml.py
+++ b/tests/unit/test_add_contract_to_yml.py
@@ -6,10 +6,12 @@
     expected_contract_yml_no_entry,
     expected_contract_yml_one_col,
     expected_contract_yml_other_model,
+    expected_contract_yml_one_col_one_test,
     model_yml_all_col,
     model_yml_no_col_no_version,
     model_yml_one_col,
     model_yml_other_model,
+    model_yml_one_col_one_test,
     shared_model_catalog_entry,
 )
 from . import read_yml
@@ -36,6 +38,14 @@ def test_add_contract_to_yml_one_col(self):
         )
         assert yml_dict == read_yml(expected_contract_yml_one_col)
 
+    def test_add_contract_to_yml_one_col_one_test(self):
+        yml_dict = meshify.add_model_contract_to_yml(
+            models_yml=read_yml(model_yml_one_col_one_test),
+            model_catalog=catalog_entry,
+            model_name=model_name,
+        )
+        assert yml_dict == read_yml(expected_contract_yml_one_col_one_test)
+
     def test_add_contract_to_yml_all_col(self):
         yml_dict = meshify.add_model_contract_to_yml(
             models_yml=read_yml(model_yml_all_col),