diff --git a/neutron/db/migration/alembic_migrations/versions/EXPAND_HEAD b/neutron/db/migration/alembic_migrations/versions/EXPAND_HEAD
index 30dc6562ae9..d13d55f4767 100644
--- a/neutron/db/migration/alembic_migrations/versions/EXPAND_HEAD
+++ b/neutron/db/migration/alembic_migrations/versions/EXPAND_HEAD
@@ -1 +1 @@
-6135a7bd4425
+8df53b0d2c0e
diff --git a/neutron/db/migration/alembic_migrations/versions/xena/expand/8df53b0d2c0e_increase_tag_elements_from_60_to_255_.py b/neutron/db/migration/alembic_migrations/versions/xena/expand/8df53b0d2c0e_increase_tag_elements_from_60_to_255_.py
new file mode 100644
index 00000000000..61358ffce0c
--- /dev/null
+++ b/neutron/db/migration/alembic_migrations/versions/xena/expand/8df53b0d2c0e_increase_tag_elements_from_60_to_255_.py
@@ -0,0 +1,36 @@
+# Copyright 2021 OpenStack Foundation
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+#
+
+from alembic import op
+import sqlalchemy as sa
+
+"""increase tag elements from 60 to 255 chars
+
+Revision ID: 8df53b0d2c0e
+Revises: 6135a7bd4425
+Create Date: 2021-03-29 14:44:35.607053
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = '8df53b0d2c0e'
+down_revision = '6135a7bd4425'
+
+TABLE = 'tags'
+
+
+def upgrade():
+    op.alter_column(TABLE, 'tag', existing_type=sa.String(60),
+                    type_=sa.String(255), existing_nullable=False)
diff --git a/neutron/db/models/tag.py b/neutron/db/models/tag.py
index 7e37cfe01a0..3cab5a81959 100644
--- a/neutron/db/models/tag.py
+++ b/neutron/db/models/tag.py
@@ -24,7 +24,7 @@ class Tag(model_base.BASEV2):
         sa.BigInteger().with_variant(sa.Integer(), 'sqlite'),
         sa.ForeignKey(standard_attr.StandardAttribute.id, ondelete="CASCADE"),
         nullable=False, primary_key=True)
-    tag = sa.Column(sa.String(60), nullable=False, primary_key=True)
+    tag = sa.Column(sa.String(255), nullable=False, primary_key=True)
     standard_attr = orm.relationship(
         'StandardAttribute', load_on_pending=True,
         backref=orm.backref('tags', lazy='subquery', viewonly=True))
diff --git a/neutron/extensions/tagging.py b/neutron/extensions/tagging.py
index 57806ba0250..162f55ceb83 100644
--- a/neutron/extensions/tagging.py
+++ b/neutron/extensions/tagging.py
@@ -35,7 +35,7 @@ TAGS = TAG + 's'
 TAGS_ANY = TAGS + '-any'
 NOT_TAGS = 'not-' + TAGS
 NOT_TAGS_ANY = NOT_TAGS + '-any'
-MAX_TAG_LEN = 60
+MAX_TAG_LEN = 255
 TAG_PLUGIN_TYPE = 'TAG'
 
 TAG_SUPPORTED_RESOURCES = standard_attr.get_tag_resource_parent_map()
diff --git a/releasenotes/notes/tag-elements-increased-from-60-to-255-e98455525b865333.yaml b/releasenotes/notes/tag-elements-increased-from-60-to-255-e98455525b865333.yaml
new file mode 100644
index 00000000000..1c4abd87ff6
--- /dev/null
+++ b/releasenotes/notes/tag-elements-increased-from-60-to-255-e98455525b865333.yaml
@@ -0,0 +1,6 @@
+---
+other:
+  - |
+    Neutron resource tags can now be 255 characters long, previously resource
+    tags was limited to 60 characters.
+