diff --git a/google/cloud/firestore_admin_v1/services/firestore_admin/async_client.py b/google/cloud/firestore_admin_v1/services/firestore_admin/async_client.py
index 4f7e1d40d9..78ebf34aa6 100644
--- a/google/cloud/firestore_admin_v1/services/firestore_admin/async_client.py
+++ b/google/cloud/firestore_admin_v1/services/firestore_admin/async_client.py
@@ -2074,7 +2074,7 @@ async def cancel_operation(
             metadata=metadata,
         )
 
-    async def __aenter__(self):
+    async def __aenter__(self) -> "FirestoreAdminAsyncClient":
         return self
 
     async def __aexit__(self, exc_type, exc, tb):
diff --git a/google/cloud/firestore_admin_v1/services/firestore_admin/transports/rest.py b/google/cloud/firestore_admin_v1/services/firestore_admin/transports/rest.py
index 2685a4a707..2ac7d2f978 100644
--- a/google/cloud/firestore_admin_v1/services/firestore_admin/transports/rest.py
+++ b/google/cloud/firestore_admin_v1/services/firestore_admin/transports/rest.py
@@ -2081,7 +2081,7 @@ def __call__(
             request_kwargs = json_format.MessageToDict(request)
             transcoded_request = path_template.transcode(http_options, **request_kwargs)
 
-            body = json.loads(json.dumps(transcoded_request["body"]))
+            body = json.dumps(transcoded_request["body"])
             uri = transcoded_request["uri"]
             method = transcoded_request["method"]
 
diff --git a/google/cloud/firestore_v1/services/firestore/async_client.py b/google/cloud/firestore_v1/services/firestore/async_client.py
index 9e12940841..1ef464d754 100644
--- a/google/cloud/firestore_v1/services/firestore/async_client.py
+++ b/google/cloud/firestore_v1/services/firestore/async_client.py
@@ -2169,7 +2169,7 @@ async def cancel_operation(
             metadata=metadata,
         )
 
-    async def __aenter__(self):
+    async def __aenter__(self) -> "FirestoreAsyncClient":
         return self
 
     async def __aexit__(self, exc_type, exc, tb):
diff --git a/google/cloud/firestore_v1/services/firestore/transports/rest.py b/google/cloud/firestore_v1/services/firestore/transports/rest.py
index 65276d2727..74fb4a9bcf 100644
--- a/google/cloud/firestore_v1/services/firestore/transports/rest.py
+++ b/google/cloud/firestore_v1/services/firestore/transports/rest.py
@@ -2203,7 +2203,7 @@ def __call__(
             request_kwargs = json_format.MessageToDict(request)
             transcoded_request = path_template.transcode(http_options, **request_kwargs)
 
-            body = json.loads(json.dumps(transcoded_request["body"]))
+            body = json.dumps(transcoded_request["body"])
             uri = transcoded_request["uri"]
             method = transcoded_request["method"]
 
diff --git a/tests/unit/gapic/firestore_admin_v1/test_firestore_admin.py b/tests/unit/gapic/firestore_admin_v1/test_firestore_admin.py
index 1a598acb7e..e947caafb0 100644
--- a/tests/unit/gapic/firestore_admin_v1/test_firestore_admin.py
+++ b/tests/unit/gapic/firestore_admin_v1/test_firestore_admin.py
@@ -1374,9 +1374,11 @@ async def test_list_indexes_async_pages():
             RuntimeError,
         )
         pages = []
-        async for page_ in (
+        # Workaround issue in python 3.9 related to code coverage by adding `# pragma: no branch`
+        # See https://github.com/googleapis/gapic-generator-python/pull/1174#issuecomment-1025132372
+        async for page_ in (  # pragma: no branch
             await client.list_indexes(request={})
-        ).pages:  # pragma: no branch
+        ).pages:
             pages.append(page_)
         for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
             assert page_.raw_page.next_page_token == token
@@ -2708,9 +2710,11 @@ async def test_list_fields_async_pages():
             RuntimeError,
         )
         pages = []
-        async for page_ in (
+        # Workaround issue in python 3.9 related to code coverage by adding `# pragma: no branch`
+        # See https://github.com/googleapis/gapic-generator-python/pull/1174#issuecomment-1025132372
+        async for page_ in (  # pragma: no branch
             await client.list_fields(request={})
-        ).pages:  # pragma: no branch
+        ).pages:
             pages.append(page_)
         for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
             assert page_.raw_page.next_page_token == token
diff --git a/tests/unit/gapic/firestore_v1/test_firestore.py b/tests/unit/gapic/firestore_v1/test_firestore.py
index f982df7985..b06a838668 100644
--- a/tests/unit/gapic/firestore_v1/test_firestore.py
+++ b/tests/unit/gapic/firestore_v1/test_firestore.py
@@ -1178,9 +1178,11 @@ async def test_list_documents_async_pages():
             RuntimeError,
         )
         pages = []
-        async for page_ in (
+        # Workaround issue in python 3.9 related to code coverage by adding `# pragma: no branch`
+        # See https://github.com/googleapis/gapic-generator-python/pull/1174#issuecomment-1025132372
+        async for page_ in (  # pragma: no branch
             await client.list_documents(request={})
-        ).pages:  # pragma: no branch
+        ).pages:
             pages.append(page_)
         for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
             assert page_.raw_page.next_page_token == token
@@ -3154,9 +3156,11 @@ async def test_partition_query_async_pages():
             RuntimeError,
         )
         pages = []
-        async for page_ in (
+        # Workaround issue in python 3.9 related to code coverage by adding `# pragma: no branch`
+        # See https://github.com/googleapis/gapic-generator-python/pull/1174#issuecomment-1025132372
+        async for page_ in (  # pragma: no branch
             await client.partition_query(request={})
-        ).pages:  # pragma: no branch
+        ).pages:
             pages.append(page_)
         for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
             assert page_.raw_page.next_page_token == token
@@ -3742,9 +3746,11 @@ async def test_list_collection_ids_async_pages():
             RuntimeError,
         )
         pages = []
-        async for page_ in (
+        # Workaround issue in python 3.9 related to code coverage by adding `# pragma: no branch`
+        # See https://github.com/googleapis/gapic-generator-python/pull/1174#issuecomment-1025132372
+        async for page_ in (  # pragma: no branch
             await client.list_collection_ids(request={})
-        ).pages:  # pragma: no branch
+        ).pages:
             pages.append(page_)
         for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
             assert page_.raw_page.next_page_token == token
@@ -5150,7 +5156,7 @@ def test_batch_get_documents_rest(request_type):
         # Designate an appropriate value for the returned response.
         return_value = firestore.BatchGetDocumentsResponse(
             transaction=b"transaction_blob",
-            found=document.Document(name="name_value"),
+            missing="missing_value",
         )
 
         # Wrap the value into a proper Response obj