diff --git a/stactools_pipelines/models/pipeline.py b/stactools_pipelines/models/pipeline.py
index db91d83..eb3a3b8 100644
--- a/stactools_pipelines/models/pipeline.py
+++ b/stactools_pipelines/models/pipeline.py
@@ -14,7 +14,7 @@ class Pipeline(BaseModel):
     compute: ComputeEnum
     secret_arn: str
     ingestor_url: str
-    sns: Optional[str]
+    sns: Optional[str] = None
     inventory_location: Optional[str] = None
     historic_frequency: Optional[int] = None
     initial_chunk: Optional[str] = None
diff --git a/stactools_pipelines/pipelines/aws_noaa_oisst_avhrr_only/test_app.py b/stactools_pipelines/pipelines/aws_noaa_oisst_avhrr_only/test_app.py
index fcbd340..f438776 100644
--- a/stactools_pipelines/pipelines/aws_noaa_oisst_avhrr_only/test_app.py
+++ b/stactools_pipelines/pipelines/aws_noaa_oisst_avhrr_only/test_app.py
@@ -12,7 +12,7 @@
 
 def test_create_item():
     item = module_create_item()
-    assert type(item) == pystac.item.Item
+    assert isinstance(item, pystac.Item)
 
 
 @pytest.mark.parametrize("pipeline_id", ["aws_noaa_oisst_avhrr_only"])
diff --git a/stactools_pipelines/pipelines/aws_noaa_oisst_avhrr_only/test_collection.py b/stactools_pipelines/pipelines/aws_noaa_oisst_avhrr_only/test_collection.py
index c4e1584..2fce345 100644
--- a/stactools_pipelines/pipelines/aws_noaa_oisst_avhrr_only/test_collection.py
+++ b/stactools_pipelines/pipelines/aws_noaa_oisst_avhrr_only/test_collection.py
@@ -12,7 +12,7 @@
 
 def test_create_collection():
     collection = module_create_collection()
-    assert type(collection) == pystac.collection.Collection
+    assert isinstance(collection, pystac.Collection)
 
 
 @pytest.mark.parametrize("pipeline_id", ["aws_noaa_oisst_avhrr_only"])