diff --git a/dbmigration/migrate_from_2.1_to_3.0.py b/dbmigration/migrate_from_2.1_to_3.0.py
new file mode 100644
index 0000000..e421d6e
--- /dev/null
+++ b/dbmigration/migrate_from_2.1_to_3.0.py
@@ -0,0 +1,38 @@
+#!/usr/bin/python
+# -*- coding: UTF-8 -*-
+
+import sqlite3
+import datetime
+from ulid import ULID
+
+# add column ulid
+connection = sqlite3.connect("db.sqlite")
+cursor = connection.cursor()
+script = """
+PRAGMA foreign_keys = OFF;
+BEGIN TRANSACTION;
+ALTER TABLE comment ADD ulid INTEGER;
+COMMIT;
+PRAGMA foreign_keys = ON;
+"""
+cursor.executescript(script)
+connection.close()
+
+# fill in ulid column
+connection = sqlite3.connect("db.sqlite")
+cursor = connection.cursor()
+updates = []
+for row in cursor.execute('SELECT * FROM comment'):
+    row_id = row[0]
+    string_created = row[2]
+    date_created = datetime.datetime.strptime(string_created, "%Y-%m-%d %H:%M:%S")
+    ulid = ULID.from_datetime(date_created)
+    update = "UPDATE comment SET ulid = " + str(int(ulid)) + " WHERE id = " + str(row_id)
+    print(update)
+    updates.append(update)
+
+for update in updates:
+    pass
+    connection.execute(update)
+connection.commit()
+connection.close()
diff --git a/poetry.lock b/poetry.lock
index c305e46..70cb658 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -495,6 +495,14 @@ python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,>=2.7"
 [package.dependencies]
 six = ">=1.5"
 
+[[package]]
+name = "python-ulid"
+version = "1.0.3"
+description = "Universally Unique Lexicographically Sortable Identifier"
+category = "main"
+optional = false
+python-versions = "*"
+
 [[package]]
 name = "pytz"
 version = "2021.3"
@@ -688,7 +696,7 @@ testing = ["pytest (>=6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytest-
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.8"
-content-hash = "79d96a01febb3d55127734be5b86aefdaab09d1f400efd8cbbcd55faf00030cb"
+content-hash = "24b77862cfbece0c68447f4d026bed51431e3a655a92dde2697368e758bfac89"
 
 [metadata.files]
 appdirs = [
@@ -1000,6 +1008,10 @@ python-dateutil = [
     {file = "python-dateutil-2.8.2.tar.gz", hash = "sha256:0123cacc1627ae19ddf3c27a5de5bd67ee4586fbdd6440d9748f8abb483d3e86"},
     {file = "python_dateutil-2.8.2-py2.py3-none-any.whl", hash = "sha256:961d03dc3453ebbc59dbdea9e4e11c5651520a876d0f4db161e8674aae935da9"},
 ]
+python-ulid = [
+    {file = "python-ulid-1.0.3.tar.gz", hash = "sha256:5dd8b969312a40e2212cec9c1ad63f25d4b6eafd92ee3195883e0287b6e9d19e"},
+    {file = "python_ulid-1.0.3-py3-none-any.whl", hash = "sha256:8704dc20f547f531fe3a41d4369842d737a0f275403b909d0872e7ea0fe8d6f2"},
+]
 pytz = [
     {file = "pytz-2021.3-py2.py3-none-any.whl", hash = "sha256:3672058bc3453457b622aab7a1c3bfd5ab0bdae451512f6cf25f64ed37f5b87c"},
     {file = "pytz-2021.3.tar.gz", hash = "sha256:acad2d8b20a1af07d4e4c9d2e9285c5ed9104354062f275f3fcd88dcef4f1326"},
diff --git a/pyproject.toml b/pyproject.toml
index 64d6f78..718ebee 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -18,6 +18,7 @@ requests = "^2.25.1"
 coverage = "^5.5"
 peewee = "^3.14.8"
 tox = "^3.24.5"
+python-ulid = "^1.0.3"
 
 [tool.poetry.dev-dependencies]
 rope = "^0.16.0"