diff --git a/tests/activities/test_gates.py b/tests/activities/test_gates.py
index 366829a..ab5b0a4 100644
--- a/tests/activities/test_gates.py
+++ b/tests/activities/test_gates.py
@@ -32,7 +32,9 @@ async def test_data_quality_gate_with_null_values_filter_discard(gates_fixture):
     # Setup test data
     input_data = {
         'filters': {
-            'NULL_VALUES_FILTER': 'DISCARD'
+            'NULL_VALUES_FILTER': {
+                'policy': 'DISCARD'
+            }
         },
         'data': {
             'tag': ['tag1', 'tag2', 'tag3'],
@@ -62,7 +64,9 @@ async def test_data_quality_gate_with_out_of_bounds_filter_keep(gates_fixture):
     # Setup test data with out of bounds values
     input_data = {
         'filters': {
-            'OUT_OF_BOUNDS_FILTER': 'KEEP'
+            'OUT_OF_BOUNDS_FILTER': {
+                'policy': 'KEEP'
+            }
         },
         'data': {
             'tag': ['tag1', 'tag2', 'tag3'],
@@ -95,8 +99,12 @@ async def test_data_quality_gate_with_multiple_filters(gates_fixture):
     # Setup test data
     input_data = {
         'filters': {
-            'NULL_VALUES_FILTER': 'DISCARD',
-            'OUT_OF_BOUNDS_FILTER': 'DISCARD'
+            'NULL_VALUES_FILTER': {
+                'policy': 'DISCARD'
+            },
+            'OUT_OF_BOUNDS_FILTER': {
+                'policy': 'DISCARD'
+            }
         },
         'data': {
             'tag': ['tag1', 'tag2', 'tag3', 'tag4'],
@@ -129,7 +137,9 @@ async def test_data_quality_gate_with_unknown_filter(gates_fixture):
     gates_fixture.warning = MagicMock()
     input_data = {
         'filters': {
-            'UNKNOWN_FILTER': 'DISCARD'
+            'UNKNOWN_FILTER': {
+                'policy': 'DISCARD'
+            }
         },
         'data': {
             'tag': ['tag1'],
@@ -160,7 +170,9 @@ async def test_data_quality_gate_with_filter_error(gates_fixture):
     # Setup test data
     input_data = {
         'filters': {
-            'NULL_VALUES_FILTER': 'DISCARD'
+            'NULL_VALUES_FILTER': {
+                'policy': 'DISCARD'
+            }
         },
         'data': {
             'tag': ['tag1'],
@@ -199,7 +211,9 @@ async def test_data_quality_gate_with_empty_data(gates_fixture):
     # Setup empty input data
     input_data = {
         'filters': {
-            'NULL_VALUES_FILTER': 'DISCARD'
+            'NULL_VALUES_FILTER': {
+                'policy': 'DISCARD'
+            }
         },
         'data': {
             'tag': [],