diff --git a/ironic/db/sqlalchemy/alembic/versions/01f21d5e5195_increase_length_of_user_column.py b/ironic/db/sqlalchemy/alembic/versions/01f21d5e5195_increase_length_of_user_column.py
new file mode 100644
index 0000000000..81dd88a8af
--- /dev/null
+++ b/ironic/db/sqlalchemy/alembic/versions/01f21d5e5195_increase_length_of_user_column.py
@@ -0,0 +1,33 @@
+#    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.
+
+"""increase-length-of-user-column
+
+Revision ID: 01f21d5e5195
+Revises: aa2384fee727
+Create Date: 2024-03-05 11:02:08.996894
+
+"""
+
+from alembic import op
+import sqlalchemy as sa
+
+# revision identifiers, used by Alembic.
+revision = '01f21d5e5195'
+down_revision = 'aa2384fee727'
+
+
+def upgrade():
+    op.alter_column('node_history', 'user',
+                    existing_type=sa.String(length=32),
+                    type_=sa.String(length=64),
+                    existing_nullable=True)
diff --git a/ironic/db/sqlalchemy/models.py b/ironic/db/sqlalchemy/models.py
index 5660d7b1dd..ff4dcc522b 100644
--- a/ironic/db/sqlalchemy/models.py
+++ b/ironic/db/sqlalchemy/models.py
@@ -484,7 +484,7 @@ class NodeHistory(Base):
     event_type = Column(String(255), nullable=True)
     severity = Column(String(255), nullable=True)
     event = Column(Text, nullable=True)
-    user = Column(String(32), nullable=True)
+    user = Column(String(64), nullable=True)
     node_id = Column(Integer, ForeignKey('nodes.id'), nullable=True)
 
 
diff --git a/ironic/tests/unit/db/sqlalchemy/test_migrations.py b/ironic/tests/unit/db/sqlalchemy/test_migrations.py
index 3b44b04efa..416c7a5ba9 100644
--- a/ironic/tests/unit/db/sqlalchemy/test_migrations.py
+++ b/ironic/tests/unit/db/sqlalchemy/test_migrations.py
@@ -351,6 +351,22 @@ class MigrationCheckersMixin(object):
         self.assertIsInstance(nodes.c.inspection_finished_at.type,
                               sqlalchemy.types.DateTime)
 
+    def _check_01f21d5e5195(self, engine, data):
+        node_history = db_utils.get_table(engine, 'node_history')
+        bigstring = 'a' * 64
+        uuid = uuidutils.generate_uuid()
+        data = {'uuid': uuid, 'user': bigstring}
+        with engine.begin() as connection:
+            insert_node_history = node_history.insert().values(data)
+            connection.execute(insert_node_history)
+            node_history_stmt = sqlalchemy.select(
+                models.NodeHistory.user
+            ).where(
+                models.NodeHistory.uuid == uuid
+            )
+            node_history = connection.execute(node_history_stmt).first()
+            self.assertEqual(bigstring, node_history.user)
+
     def _check_4f399b21ae71(self, engine, data):
         nodes = db_utils.get_table(engine, 'nodes')
         col_names = [column.name for column in nodes.c]
diff --git a/releasenotes/notes/increase_node_history_user_column_limit-8da6ae03288bff26.yaml b/releasenotes/notes/increase_node_history_user_column_limit-8da6ae03288bff26.yaml
new file mode 100644
index 0000000000..e558f0b1e2
--- /dev/null
+++ b/releasenotes/notes/increase_node_history_user_column_limit-8da6ae03288bff26.yaml
@@ -0,0 +1,6 @@
+---
+fixes:
+  - |
+    Increases the 32-character limit of the ``user`` column in the
+    ``NodeHistory`` model to support up to 64-character-long values.
+    For more information, `see bug <https://bugs.launchpad.net/ironic/+bug/2054594>`_.