diff --git a/google/cloud/bigquery_storage_v1/types/storage.py b/google/cloud/bigquery_storage_v1/types/storage.py
index 2b576fbd..d0b707a4 100644
--- a/google/cloud/bigquery_storage_v1/types/storage.py
+++ b/google/cloud/bigquery_storage_v1/types/storage.py
@@ -790,6 +790,21 @@ class StorageErrorCode(proto.Enum):
                 Offset already exists.
             OFFSET_OUT_OF_RANGE (9):
                 Offset out of range.
+            CMEK_NOT_PROVIDED (10):
+                Customer-managed encryption key (CMEK) not
+                provided for CMEK-enabled data.
+            INVALID_CMEK_PROVIDED (11):
+                Customer-managed encryption key (CMEK) was
+                incorrectly provided.
+            CMEK_ENCRYPTION_ERROR (12):
+                There is an encryption error while using
+                customer-managed encryption key.
+            KMS_SERVICE_ERROR (13):
+                Key Management Service (KMS) service returned
+                an error.
+            KMS_PERMISSION_DENIED (14):
+                Permission denied while using
+                customer-managed encryption key.
         """
         STORAGE_ERROR_CODE_UNSPECIFIED = 0
         TABLE_NOT_FOUND = 1
@@ -801,6 +816,11 @@ class StorageErrorCode(proto.Enum):
         SCHEMA_MISMATCH_EXTRA_FIELDS = 7
         OFFSET_ALREADY_EXISTS = 8
         OFFSET_OUT_OF_RANGE = 9
+        CMEK_NOT_PROVIDED = 10
+        INVALID_CMEK_PROVIDED = 11
+        CMEK_ENCRYPTION_ERROR = 12
+        KMS_SERVICE_ERROR = 13
+        KMS_PERMISSION_DENIED = 14
 
     code: StorageErrorCode = proto.Field(
         proto.ENUM,
diff --git a/google/cloud/bigquery_storage_v1/types/stream.py b/google/cloud/bigquery_storage_v1/types/stream.py
index 459c285f..6fee0412 100644
--- a/google/cloud/bigquery_storage_v1/types/stream.py
+++ b/google/cloud/bigquery_storage_v1/types/stream.py
@@ -230,6 +230,16 @@ class TableReadOptions(proto.Message):
                 output format
 
                 This field is a member of `oneof`_ ``output_format_serialization_options``.
+            sample_percentage (float):
+                Optional. Specifies a table sampling percentage.
+                Specifically, the query planner will use TABLESAMPLE SYSTEM
+                (sample_percentage PERCENT). This samples at the file-level.
+                It will randomly choose for each file whether to include
+                that file in the sample returned. Note, that if the table
+                only has one file, then TABLESAMPLE SYSTEM will select that
+                file and return all returnable rows contained within.
+
+                This field is a member of `oneof`_ ``_sample_percentage``.
         """
 
         selected_fields: MutableSequence[str] = proto.RepeatedField(
@@ -252,6 +262,11 @@ class TableReadOptions(proto.Message):
             oneof="output_format_serialization_options",
             message=avro.AvroSerializationOptions,
         )
+        sample_percentage: float = proto.Field(
+            proto.DOUBLE,
+            number=5,
+            optional=True,
+        )
 
     name: str = proto.Field(
         proto.STRING,
diff --git a/samples/generated_samples/snippet_metadata_google.cloud.bigquery.storage.v1.json b/samples/generated_samples/snippet_metadata_google.cloud.bigquery.storage.v1.json
index a29de587..c1d15715 100644
--- a/samples/generated_samples/snippet_metadata_google.cloud.bigquery.storage.v1.json
+++ b/samples/generated_samples/snippet_metadata_google.cloud.bigquery.storage.v1.json
@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-bigquery-storage",
-    "version": "2.19.1"
+    "version": "0.1.0"
   },
   "snippets": [
     {
diff --git a/samples/generated_samples/snippet_metadata_google.cloud.bigquery.storage.v1beta2.json b/samples/generated_samples/snippet_metadata_google.cloud.bigquery.storage.v1beta2.json
index aa4256a8..302b7815 100644
--- a/samples/generated_samples/snippet_metadata_google.cloud.bigquery.storage.v1beta2.json
+++ b/samples/generated_samples/snippet_metadata_google.cloud.bigquery.storage.v1beta2.json
@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-bigquery-storage",
-    "version": "2.19.1"
+    "version": "0.1.0"
   },
   "snippets": [
     {