diff --git a/web/migrations/versions/018e16dad6aa_.py b/web/migrations/versions/018e16dad6aa_.py
new file mode 100644
index 00000000000..7a4dd87a190
--- /dev/null
+++ b/web/migrations/versions/018e16dad6aa_.py
@@ -0,0 +1,38 @@
+##########################################################################
+#
+# pgAdmin 4 - PostgreSQL Tools
+#
+# Copyright (C) 2013 - 2026, The pgAdmin Development Team
+# This software is released under the PostgreSQL Licence
+#
+##########################################################################
+
+"""
+Updated id column type to BIGINT.
+
+Revision ID: 018e16dad6aa
+Revises: efbbe5d5862f
+Create Date: 2026-01-08 14:37:33.257002
+
+"""
+import sqlalchemy as sa
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision = '018e16dad6aa'
+down_revision = 'efbbe5d5862f'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    with op.batch_alter_table("database") as batch_op:
+        batch_op.alter_column('id',
+                              existing_type=sa.Integer(),
+                              type_=sa.BigInteger(),
+                              nullable=False)
+
+
+def downgrade():
+    # pgAdmin only upgrades, downgrade not implemented.
+    pass
diff --git a/web/pgadmin/model/__init__.py b/web/pgadmin/model/__init__.py
index 553758b814f..69b934683dd 100644
--- a/web/pgadmin/model/__init__.py
+++ b/web/pgadmin/model/__init__.py
@@ -33,7 +33,7 @@
 #
 ##########################################################################
 
-SCHEMA_VERSION = 48
+SCHEMA_VERSION = 49
 
 ##########################################################################
 #
@@ -412,7 +412,7 @@ class Database(db.Model):
     Define a Database.
     """
     __tablename__ = 'database'
-    id = db.Column(db.Integer, primary_key=True)
+    id = db.Column(db.BigInteger, primary_key=True)
     schema_res = db.Column(db.String(256), nullable=True)
     server = db.Column(
         db.Integer,