diff --git a/google/cloud/vision_v1/services/image_annotator/client.py b/google/cloud/vision_v1/services/image_annotator/client.py
index f4f30a06..f9d96c7c 100644
--- a/google/cloud/vision_v1/services/image_annotator/client.py
+++ b/google/cloud/vision_v1/services/image_annotator/client.py
@@ -551,9 +551,6 @@ def sample_batch_annotate_images():
         # there are no flattened fields.
         if not isinstance(request, image_annotator.BatchAnnotateImagesRequest):
             request = image_annotator.BatchAnnotateImagesRequest(request)
-            if requests is not None:
-                for i in range(len(requests)):
-                    requests[i] = image_annotator.AnnotateImageRequest(requests[i])
             # If we have keyword arguments corresponding to fields on the
             # request, apply these.
             if requests is not None:
@@ -658,9 +655,6 @@ def sample_batch_annotate_files():
         # there are no flattened fields.
         if not isinstance(request, image_annotator.BatchAnnotateFilesRequest):
             request = image_annotator.BatchAnnotateFilesRequest(request)
-            if requests is not None:
-                for i in range(len(requests)):
-                    requests[i] = image_annotator.AnnotateFileRequest(requests[i])
             # If we have keyword arguments corresponding to fields on the
             # request, apply these.
             if requests is not None:
@@ -786,9 +780,6 @@ def sample_async_batch_annotate_images():
         # there are no flattened fields.
         if not isinstance(request, image_annotator.AsyncBatchAnnotateImagesRequest):
             request = image_annotator.AsyncBatchAnnotateImagesRequest(request)
-            if requests is not None:
-                for i in range(len(requests)):
-                    requests[i] = image_annotator.AnnotateImageRequest(requests[i])
             # If we have keyword arguments corresponding to fields on the
             # request, apply these.
             if requests is not None:
@@ -914,9 +905,6 @@ def sample_async_batch_annotate_files():
         # there are no flattened fields.
         if not isinstance(request, image_annotator.AsyncBatchAnnotateFilesRequest):
             request = image_annotator.AsyncBatchAnnotateFilesRequest(request)
-            if requests is not None:
-                for i in range(len(requests)):
-                    requests[i] = image_annotator.AsyncAnnotateFileRequest(requests[i])
             # If we have keyword arguments corresponding to fields on the
             # request, apply these.
             if requests is not None:
diff --git a/google/cloud/vision_v1p1beta1/services/image_annotator/client.py b/google/cloud/vision_v1p1beta1/services/image_annotator/client.py
index 1b42e920..31d786e3 100644
--- a/google/cloud/vision_v1p1beta1/services/image_annotator/client.py
+++ b/google/cloud/vision_v1p1beta1/services/image_annotator/client.py
@@ -503,9 +503,6 @@ def sample_batch_annotate_images():
         # there are no flattened fields.
         if not isinstance(request, image_annotator.BatchAnnotateImagesRequest):
             request = image_annotator.BatchAnnotateImagesRequest(request)
-            if requests is not None:
-                for i in range(len(requests)):
-                    requests[i] = image_annotator.AnnotateImageRequest(requests[i])
             # If we have keyword arguments corresponding to fields on the
             # request, apply these.
             if requests is not None:
diff --git a/google/cloud/vision_v1p2beta1/services/image_annotator/client.py b/google/cloud/vision_v1p2beta1/services/image_annotator/client.py
index efa9c4a6..665437e1 100644
--- a/google/cloud/vision_v1p2beta1/services/image_annotator/client.py
+++ b/google/cloud/vision_v1p2beta1/services/image_annotator/client.py
@@ -505,9 +505,6 @@ def sample_batch_annotate_images():
         # there are no flattened fields.
         if not isinstance(request, image_annotator.BatchAnnotateImagesRequest):
             request = image_annotator.BatchAnnotateImagesRequest(request)
-            if requests is not None:
-                for i in range(len(requests)):
-                    requests[i] = image_annotator.AnnotateImageRequest(requests[i])
             # If we have keyword arguments corresponding to fields on the
             # request, apply these.
             if requests is not None:
@@ -621,9 +618,6 @@ def sample_async_batch_annotate_files():
         # there are no flattened fields.
         if not isinstance(request, image_annotator.AsyncBatchAnnotateFilesRequest):
             request = image_annotator.AsyncBatchAnnotateFilesRequest(request)
-            if requests is not None:
-                for i in range(len(requests)):
-                    requests[i] = image_annotator.AsyncAnnotateFileRequest(requests[i])
             # If we have keyword arguments corresponding to fields on the
             # request, apply these.
             if requests is not None:
diff --git a/google/cloud/vision_v1p3beta1/services/image_annotator/client.py b/google/cloud/vision_v1p3beta1/services/image_annotator/client.py
index b2ef2b1c..37f31d03 100644
--- a/google/cloud/vision_v1p3beta1/services/image_annotator/client.py
+++ b/google/cloud/vision_v1p3beta1/services/image_annotator/client.py
@@ -551,9 +551,6 @@ def sample_batch_annotate_images():
         # there are no flattened fields.
         if not isinstance(request, image_annotator.BatchAnnotateImagesRequest):
             request = image_annotator.BatchAnnotateImagesRequest(request)
-            if requests is not None:
-                for i in range(len(requests)):
-                    requests[i] = image_annotator.AnnotateImageRequest(requests[i])
             # If we have keyword arguments corresponding to fields on the
             # request, apply these.
             if requests is not None:
@@ -667,9 +664,6 @@ def sample_async_batch_annotate_files():
         # there are no flattened fields.
         if not isinstance(request, image_annotator.AsyncBatchAnnotateFilesRequest):
             request = image_annotator.AsyncBatchAnnotateFilesRequest(request)
-            if requests is not None:
-                for i in range(len(requests)):
-                    requests[i] = image_annotator.AsyncAnnotateFileRequest(requests[i])
             # If we have keyword arguments corresponding to fields on the
             # request, apply these.
             if requests is not None:
diff --git a/google/cloud/vision_v1p4beta1/services/image_annotator/client.py b/google/cloud/vision_v1p4beta1/services/image_annotator/client.py
index 9d5a9e1e..b857ef9a 100644
--- a/google/cloud/vision_v1p4beta1/services/image_annotator/client.py
+++ b/google/cloud/vision_v1p4beta1/services/image_annotator/client.py
@@ -551,9 +551,6 @@ def sample_batch_annotate_images():
         # there are no flattened fields.
         if not isinstance(request, image_annotator.BatchAnnotateImagesRequest):
             request = image_annotator.BatchAnnotateImagesRequest(request)
-            if requests is not None:
-                for i in range(len(requests)):
-                    requests[i] = image_annotator.AnnotateImageRequest(requests[i])
             # If we have keyword arguments corresponding to fields on the
             # request, apply these.
             if requests is not None:
@@ -658,9 +655,6 @@ def sample_batch_annotate_files():
         # there are no flattened fields.
         if not isinstance(request, image_annotator.BatchAnnotateFilesRequest):
             request = image_annotator.BatchAnnotateFilesRequest(request)
-            if requests is not None:
-                for i in range(len(requests)):
-                    requests[i] = image_annotator.AnnotateFileRequest(requests[i])
             # If we have keyword arguments corresponding to fields on the
             # request, apply these.
             if requests is not None:
@@ -786,9 +780,6 @@ def sample_async_batch_annotate_images():
         # there are no flattened fields.
         if not isinstance(request, image_annotator.AsyncBatchAnnotateImagesRequest):
             request = image_annotator.AsyncBatchAnnotateImagesRequest(request)
-            if requests is not None:
-                for i in range(len(requests)):
-                    requests[i] = image_annotator.AnnotateImageRequest(requests[i])
             # If we have keyword arguments corresponding to fields on the
             # request, apply these.
             if requests is not None:
@@ -914,9 +905,6 @@ def sample_async_batch_annotate_files():
         # there are no flattened fields.
         if not isinstance(request, image_annotator.AsyncBatchAnnotateFilesRequest):
             request = image_annotator.AsyncBatchAnnotateFilesRequest(request)
-            if requests is not None:
-                for i in range(len(requests)):
-                    requests[i] = image_annotator.AsyncAnnotateFileRequest(requests[i])
             # If we have keyword arguments corresponding to fields on the
             # request, apply these.
             if requests is not None:
diff --git a/owlbot.py b/owlbot.py
index 4aa84403..50e863d6 100644
--- a/owlbot.py
+++ b/owlbot.py
@@ -63,43 +63,6 @@
         "__all__ = (",
     )
 
-    # Temporary workaround due to bug https://github.com/googleapis/proto-plus-python/issues/135
-    s.replace(
-        library / f"google/cloud/vision_{library.name}/services/image_annotator/client.py",
-        "request = image_annotator.BatchAnnotateImagesRequest\(request\)",
-        "request = image_annotator.BatchAnnotateImagesRequest(request)\n"
-        "            if requests is not None:\n"
-        "                for i in range(len(requests)):\n"
-        "                    requests[i] = image_annotator.AnnotateImageRequest(requests[i])"
-    )
-
-    s.replace(
-        library / f"google/cloud/vision_{library.name}/services/image_annotator/client.py",
-        "request = image_annotator.BatchAnnotateFilesRequest\(request\)",
-        "request = image_annotator.BatchAnnotateFilesRequest(request)\n"
-        "            if requests is not None:\n"
-        "                for i in range(len(requests)):\n"
-        "                    requests[i] = image_annotator.AnnotateFileRequest(requests[i])"
-    )
-
-    s.replace(
-        library / f"google/cloud/vision_{library.name}/services/image_annotator/client.py",
-        "request = image_annotator.AsyncBatchAnnotateImagesRequest\(request\)",
-        "request = image_annotator.AsyncBatchAnnotateImagesRequest(request)\n"
-        "            if requests is not None:\n"
-        "                for i in range(len(requests)):\n"
-        "                    requests[i] = image_annotator.AnnotateImageRequest(requests[i])"
-    )
-
-    s.replace(
-        library / f"google/cloud/vision_{library.name}/services/image_annotator/client.py",
-        "request = image_annotator.AsyncBatchAnnotateFilesRequest\(request\)",
-        "request = image_annotator.AsyncBatchAnnotateFilesRequest(request)\n"
-        "            if requests is not None:\n"
-        "                for i in range(len(requests)):\n"
-        "                    requests[i] = image_annotator.AsyncAnnotateFileRequest(requests[i])"
-    )
-
     s.move([library], excludes=["**/gapic_version.py", "README.rst", "docs/index.rst", "docs/vision_v1p1beta1", "google/cloud/vision/__init__.py"])
 s.remove_staging_dirs()
 
diff --git a/samples/generated_samples/snippet_metadata_google.cloud.vision.v1.json b/samples/generated_samples/snippet_metadata_google.cloud.vision.v1.json
index e4f113a7..e29e0ec2 100644
--- a/samples/generated_samples/snippet_metadata_google.cloud.vision.v1.json
+++ b/samples/generated_samples/snippet_metadata_google.cloud.vision.v1.json
@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-vision",
-    "version": "3.4.1"
+    "version": "0.1.0"
   },
   "snippets": [
     {
diff --git a/samples/generated_samples/snippet_metadata_google.cloud.vision.v1p1beta1.json b/samples/generated_samples/snippet_metadata_google.cloud.vision.v1p1beta1.json
index 47dc4134..70f20c5e 100644
--- a/samples/generated_samples/snippet_metadata_google.cloud.vision.v1p1beta1.json
+++ b/samples/generated_samples/snippet_metadata_google.cloud.vision.v1p1beta1.json
@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-vision",
-    "version": "3.4.1"
+    "version": "0.1.0"
   },
   "snippets": [
     {
diff --git a/samples/generated_samples/snippet_metadata_google.cloud.vision.v1p2beta1.json b/samples/generated_samples/snippet_metadata_google.cloud.vision.v1p2beta1.json
index 5428660b..52e22f36 100644
--- a/samples/generated_samples/snippet_metadata_google.cloud.vision.v1p2beta1.json
+++ b/samples/generated_samples/snippet_metadata_google.cloud.vision.v1p2beta1.json
@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-vision",
-    "version": "3.4.1"
+    "version": "0.1.0"
   },
   "snippets": [
     {
diff --git a/samples/generated_samples/snippet_metadata_google.cloud.vision.v1p3beta1.json b/samples/generated_samples/snippet_metadata_google.cloud.vision.v1p3beta1.json
index 404722cf..2dae915e 100644
--- a/samples/generated_samples/snippet_metadata_google.cloud.vision.v1p3beta1.json
+++ b/samples/generated_samples/snippet_metadata_google.cloud.vision.v1p3beta1.json
@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-vision",
-    "version": "3.4.1"
+    "version": "0.1.0"
   },
   "snippets": [
     {
diff --git a/samples/generated_samples/snippet_metadata_google.cloud.vision.v1p4beta1.json b/samples/generated_samples/snippet_metadata_google.cloud.vision.v1p4beta1.json
index 4a02eef9..a1201ce4 100644
--- a/samples/generated_samples/snippet_metadata_google.cloud.vision.v1p4beta1.json
+++ b/samples/generated_samples/snippet_metadata_google.cloud.vision.v1p4beta1.json
@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-vision",
-    "version": "3.4.1"
+    "version": "0.1.0"
   },
   "snippets": [
     {