diff --git a/google/cloud/workflows/executions_v1/services/executions/async_client.py b/google/cloud/workflows/executions_v1/services/executions/async_client.py
index e50327c..2d567a2 100644
--- a/google/cloud/workflows/executions_v1/services/executions/async_client.py
+++ b/google/cloud/workflows/executions_v1/services/executions/async_client.py
@@ -659,7 +659,7 @@ async def sample_cancel_execution():
         # Done; return the response.
         return response
 
-    async def __aenter__(self):
+    async def __aenter__(self) -> "ExecutionsAsyncClient":
         return self
 
     async def __aexit__(self, exc_type, exc, tb):
diff --git a/google/cloud/workflows/executions_v1beta/services/executions/async_client.py b/google/cloud/workflows/executions_v1beta/services/executions/async_client.py
index cd4c53a..a16ed46 100644
--- a/google/cloud/workflows/executions_v1beta/services/executions/async_client.py
+++ b/google/cloud/workflows/executions_v1beta/services/executions/async_client.py
@@ -662,7 +662,7 @@ async def sample_cancel_execution():
         # Done; return the response.
         return response
 
-    async def __aenter__(self):
+    async def __aenter__(self) -> "ExecutionsAsyncClient":
         return self
 
     async def __aexit__(self, exc_type, exc, tb):
diff --git a/google/cloud/workflows_v1/services/workflows/async_client.py b/google/cloud/workflows_v1/services/workflows/async_client.py
index f58ce36..916b957 100644
--- a/google/cloud/workflows_v1/services/workflows/async_client.py
+++ b/google/cloud/workflows_v1/services/workflows/async_client.py
@@ -860,7 +860,7 @@ async def sample_update_workflow():
         # Done; return the response.
         return response
 
-    async def __aenter__(self):
+    async def __aenter__(self) -> "WorkflowsAsyncClient":
         return self
 
     async def __aexit__(self, exc_type, exc, tb):
diff --git a/google/cloud/workflows_v1beta/services/workflows/async_client.py b/google/cloud/workflows_v1beta/services/workflows/async_client.py
index a1cd94d..9ebf79b 100644
--- a/google/cloud/workflows_v1beta/services/workflows/async_client.py
+++ b/google/cloud/workflows_v1beta/services/workflows/async_client.py
@@ -860,7 +860,7 @@ async def sample_update_workflow():
         # Done; return the response.
         return response
 
-    async def __aenter__(self):
+    async def __aenter__(self) -> "WorkflowsAsyncClient":
         return self
 
     async def __aexit__(self, exc_type, exc, tb):
diff --git a/tests/unit/gapic/executions_v1/test_executions.py b/tests/unit/gapic/executions_v1/test_executions.py
index 3495150..f57698a 100644
--- a/tests/unit/gapic/executions_v1/test_executions.py
+++ b/tests/unit/gapic/executions_v1/test_executions.py
@@ -1070,9 +1070,11 @@ async def test_list_executions_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_executions(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/executions_v1beta/test_executions.py b/tests/unit/gapic/executions_v1beta/test_executions.py
index d974e60..0ad302d 100644
--- a/tests/unit/gapic/executions_v1beta/test_executions.py
+++ b/tests/unit/gapic/executions_v1beta/test_executions.py
@@ -1070,9 +1070,11 @@ async def test_list_executions_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_executions(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/workflows_v1/test_workflows.py b/tests/unit/gapic/workflows_v1/test_workflows.py
index 77f5ec2..fedd43e 100644
--- a/tests/unit/gapic/workflows_v1/test_workflows.py
+++ b/tests/unit/gapic/workflows_v1/test_workflows.py
@@ -1104,9 +1104,11 @@ async def test_list_workflows_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_workflows(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/workflows_v1beta/test_workflows.py b/tests/unit/gapic/workflows_v1beta/test_workflows.py
index 184ed82..b0c1473 100644
--- a/tests/unit/gapic/workflows_v1beta/test_workflows.py
+++ b/tests/unit/gapic/workflows_v1beta/test_workflows.py
@@ -1104,9 +1104,11 @@ async def test_list_workflows_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_workflows(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