diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 440c9f546d21..7161ead0e1b6 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -169,7 +169,7 @@
   "google-cloud-bigquery-data_transfer-v1+FILLER": "0.0.0",
   "google-cloud-bigquery-migration": "1.4.0",
   "google-cloud-bigquery-migration+FILLER": "0.0.0",
-  "google-cloud-bigquery-migration-v2": "0.20.0",
+  "google-cloud-bigquery-migration-v2": "0.21.0",
   "google-cloud-bigquery-migration-v2+FILLER": "0.0.0",
   "google-cloud-bigquery-reservation": "1.7.0",
   "google-cloud-bigquery-reservation+FILLER": "0.0.0",
diff --git a/google-cloud-bigquery-migration-v2/CHANGELOG.md b/google-cloud-bigquery-migration-v2/CHANGELOG.md
index 8df890567aa9..21b1d3d9a209 100644
--- a/google-cloud-bigquery-migration-v2/CHANGELOG.md
+++ b/google-cloud-bigquery-migration-v2/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+### 0.21.0 (2026-05-22)
+
+#### Features
+
+* add support for assessment tasks in BigQuery Migration API ([#33975](https://github.com/googleapis/google-cloud-ruby/issues/33975)) 
+
 ### 0.20.0 (2026-04-03)
 
 #### Features
diff --git a/google-cloud-bigquery-migration-v2/lib/google/cloud/bigquery/migration/v2/version.rb b/google-cloud-bigquery-migration-v2/lib/google/cloud/bigquery/migration/v2/version.rb
index fa3b40f67acc..6b84f3e02c84 100644
--- a/google-cloud-bigquery-migration-v2/lib/google/cloud/bigquery/migration/v2/version.rb
+++ b/google-cloud-bigquery-migration-v2/lib/google/cloud/bigquery/migration/v2/version.rb
@@ -22,7 +22,7 @@ module Cloud
     module Bigquery
       module Migration
         module V2
-          VERSION = "0.20.0"
+          VERSION = "0.21.0"
         end
       end
     end
diff --git a/google-cloud-bigquery-migration-v2/snippets/snippet_metadata_google.cloud.bigquery.migration.v2.json b/google-cloud-bigquery-migration-v2/snippets/snippet_metadata_google.cloud.bigquery.migration.v2.json
index 4059a031c7b2..6b0baa1c7a50 100644
--- a/google-cloud-bigquery-migration-v2/snippets/snippet_metadata_google.cloud.bigquery.migration.v2.json
+++ b/google-cloud-bigquery-migration-v2/snippets/snippet_metadata_google.cloud.bigquery.migration.v2.json
@@ -1,7 +1,7 @@
 {
   "client_library": {
     "name": "google-cloud-bigquery-migration-v2",
-    "version": "0.20.0",
+    "version": "0.21.0",
     "language": "RUBY",
     "apis": [
       {