diff --git a/LICENSE b/LICENSE
index 5352154..29e858b 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2021 Michael Herman
+Copyright (c) 2023 Michael Herman
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/README.md b/README.md
index e5f3bfa..fc6c57b 100644
--- a/README.md
+++ b/README.md
@@ -21,4 +21,4 @@ Add a song:
 $ curl -d '{"name":"Midnight Fit", "artist":"Mogwai", "year":"2021"}' -H "Content-Type: application/json" -X POST http://localhost:8004/songs
 ```
 
-Get all songs: [http://localhost:8004/songs](http://localhost:8004/songs)
+Get all songs: [http://localhost:8004/songs](http://localhost:8004/songs)
\ No newline at end of file
diff --git a/docker-compose.yml b/docker-compose.yml
index 8be7def..ed0e352 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -15,7 +15,7 @@ services:
       - db
 
   db:
-    image: postgres:13.4
+    image: postgres:15.3
     expose:
       - 5432
     environment:
diff --git a/project/Dockerfile b/project/Dockerfile
index 860b01d..f7e7693 100644
--- a/project/Dockerfile
+++ b/project/Dockerfile
@@ -1,5 +1,5 @@
 # pull official base image
-FROM python:3.9-slim-buster
+FROM python:3.11-slim-buster
 
 # set working directory
 WORKDIR /usr/src/app
diff --git a/project/alembic.ini b/project/alembic.ini
index 7bbd09d..782a236 100644
--- a/project/alembic.ini
+++ b/project/alembic.ini
@@ -4,8 +4,9 @@
 # path to migration scripts
 script_location = migrations
 
-# template used to generate migration files
-# file_template = %%(rev)s_%%(slug)s
+# template used to generate migration file names; The default value is %%(rev)s_%%(slug)s
+# Uncomment the line below if you want the files to be prepended with date and time
+# file_template = %%(year)d_%%(month).2d_%%(day).2d_%%(hour).2d%%(minute).2d-%%(rev)s_%%(slug)s
 
 # sys.path path, will be prepended to sys.path if present.
 # defaults to the current working directory.
@@ -35,16 +36,23 @@ prepend_sys_path = .
 # version location specification; This defaults
 # to migrations/versions.  When using multiple version
 # directories, initial revisions must be specified with --version-path.
-# The path separator used here should be the separator specified by "version_path_separator"
+# The path separator used here should be the separator specified by "version_path_separator" below.
 # version_locations = %(here)s/bar:%(here)s/bat:migrations/versions
 
 # version path separator; As mentioned above, this is the character used to split
-# version_locations. Valid values are:
+# version_locations. The default within new alembic.ini files is "os", which uses os.pathsep.
+# If this key is omitted entirely, it falls back to the legacy behavior of splitting on spaces and/or commas.
+# Valid values for version_path_separator are:
 #
 # version_path_separator = :
 # version_path_separator = ;
 # version_path_separator = space
-version_path_separator = os  # default: use os.pathsep
+version_path_separator = os  # Use os.pathsep. Default configuration used for new projects.
+
+# set to 'true' to search source files recursively
+# in each "version_locations" directory
+# new in Alembic version 1.10
+# recursive_version_locations = false
 
 # the output encoding used when revision files
 # are written from script.py.mako
diff --git a/project/app/db.py b/project/app/db.py
index 48f9665..95b7692 100644
--- a/project/app/db.py
+++ b/project/app/db.py
@@ -1,15 +1,14 @@
 import os
 
-from sqlmodel import SQLModel
+from sqlmodel import SQLModel, create_engine
+from sqlmodel.ext.asyncio.session import AsyncSession, AsyncEngine
 
-from sqlalchemy.ext.asyncio import AsyncSession, create_async_engine
 from sqlalchemy.orm import sessionmaker
 
 
 DATABASE_URL = os.environ.get("DATABASE_URL")
 
-engine = create_async_engine(DATABASE_URL, echo=True, future=True)
-
+engine = AsyncEngine(create_engine(DATABASE_URL, echo=True, future=True))
 
 async def init_db():
     async with engine.begin() as conn:
@@ -22,4 +21,4 @@ async def get_session() -> AsyncSession:
         engine, class_=AsyncSession, expire_on_commit=False
     )
     async with async_session() as session:
-        yield session
+        yield session
\ No newline at end of file
diff --git a/project/app/main.py b/project/app/main.py
index 2b24454..b4d68ae 100644
--- a/project/app/main.py
+++ b/project/app/main.py
@@ -1,8 +1,8 @@
 from fastapi import Depends, FastAPI
-from sqlalchemy.future import select
-from sqlalchemy.ext.asyncio import AsyncSession
+from sqlmodel import select
+from sqlmodel.ext.asyncio.session import AsyncSession
 
-from app.db import get_session
+from app.db import get_session, init_db
 from app.models import Song, SongCreate
 
 app = FastAPI()
@@ -26,4 +26,4 @@ async def add_song(song: SongCreate, session: AsyncSession = Depends(get_session
     session.add(song)
     await session.commit()
     await session.refresh(song)
-    return song
+    return song
\ No newline at end of file
diff --git a/project/app/models.py b/project/app/models.py
index 0f2d7cd..e0953c4 100644
--- a/project/app/models.py
+++ b/project/app/models.py
@@ -1,6 +1,5 @@
-from typing import Optional
-
 from sqlmodel import SQLModel, Field
+from typing import Optional
 
 
 class SongBase(SQLModel):
@@ -10,8 +9,8 @@ class SongBase(SQLModel):
 
 
 class Song(SongBase, table=True):
-    id: int = Field(default=None, primary_key=True)
+    id: int = Field(default=None, nullable=False, primary_key=True)
 
 
 class SongCreate(SongBase):
-    pass
+    pass
\ No newline at end of file
diff --git a/project/migrations/env.py b/project/migrations/env.py
index 3180608..f17f0a5 100644
--- a/project/migrations/env.py
+++ b/project/migrations/env.py
@@ -1,14 +1,15 @@
 import asyncio
 from logging.config import fileConfig
 
-from sqlalchemy import engine_from_config
 from sqlalchemy import pool
-from sqlalchemy.ext.asyncio import AsyncEngine
-from sqlmodel import SQLModel
+from sqlalchemy.engine import Connection
+from sqlalchemy.ext.asyncio import async_engine_from_config
+from sqlmodel import SQLModel                       # NEW
+
 
 from alembic import context
 
-from app.models import Song
+from app.models import Song                         # NEW
 
 # this is the Alembic Config object, which provides
 # access to the values within the .ini file in use.
@@ -16,13 +17,14 @@
 
 # Interpret the config file for Python logging.
 # This line sets up loggers basically.
-fileConfig(config.config_file_name)
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
 
 # add your model's MetaData object here
 # for 'autogenerate' support
 # from myapp import mymodel
 # target_metadata = mymodel.Base.metadata
-target_metadata = SQLModel.metadata
+target_metadata = SQLModel.metadata             # UPDATED
 
 # other values from the config, defined by the needs of env.py,
 # can be acquired:
@@ -30,7 +32,7 @@
 # ... etc.
 
 
-def run_migrations_offline():
+def run_migrations_offline() -> None:
     """Run migrations in 'offline' mode.
 
     This configures the context with just a URL
@@ -54,34 +56,38 @@ def run_migrations_offline():
         context.run_migrations()
 
 
-def do_run_migrations(connection):
+def do_run_migrations(connection: Connection) -> None:
     context.configure(connection=connection, target_metadata=target_metadata)
 
     with context.begin_transaction():
         context.run_migrations()
 
 
-async def run_migrations_online():
-    """Run migrations in 'online' mode.
-
-    In this scenario we need to create an Engine
+async def run_async_migrations() -> None:
+    """In this scenario we need to create an Engine
     and associate a connection with the context.
 
     """
-    connectable = AsyncEngine(
-        engine_from_config(
-            config.get_section(config.config_ini_section),
-            prefix="sqlalchemy.",
-            poolclass=pool.NullPool,
-            future=True,
-        )
+
+    connectable = async_engine_from_config(
+        config.get_section(config.config_ini_section, {}),
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
     )
 
     async with connectable.connect() as connection:
         await connection.run_sync(do_run_migrations)
 
+    await connectable.dispose()
+
+
+def run_migrations_online() -> None:
+    """Run migrations in 'online' mode."""
+
+    asyncio.run(run_async_migrations())
+
 
 if context.is_offline_mode():
     run_migrations_offline()
 else:
-    asyncio.run(run_migrations_online())
+    run_migrations_online()
diff --git a/project/migrations/script.py.mako b/project/migrations/script.py.mako
index e45068f..09e55d3 100644
--- a/project/migrations/script.py.mako
+++ b/project/migrations/script.py.mako
@@ -7,7 +7,7 @@ Create Date: ${create_date}
 """
 from alembic import op
 import sqlalchemy as sa
-import sqlmodel
+import sqlmodel             # NEW
 ${imports if imports else ""}
 
 # revision identifiers, used by Alembic.
@@ -17,9 +17,9 @@ branch_labels = ${repr(branch_labels)}
 depends_on = ${repr(depends_on)}
 
 
-def upgrade():
+def upgrade() -> None:
     ${upgrades if upgrades else "pass"}
 
 
-def downgrade():
+def downgrade() -> None:
     ${downgrades if downgrades else "pass"}
diff --git a/project/migrations/versions/842abcd80d3e_init.py b/project/migrations/versions/842abcd80d3e_init.py
new file mode 100644
index 0000000..4522cde
--- /dev/null
+++ b/project/migrations/versions/842abcd80d3e_init.py
@@ -0,0 +1,34 @@
+"""init
+
+Revision ID: 842abcd80d3e
+Revises: 
+Create Date: 2023-07-10 17:10:45.380832
+
+"""
+from alembic import op
+import sqlalchemy as sa
+import sqlmodel             # NEW
+
+
+# revision identifiers, used by Alembic.
+revision = '842abcd80d3e'
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('song',
+    sa.Column('name', sqlmodel.sql.sqltypes.AutoString(), nullable=False),
+    sa.Column('artist', sqlmodel.sql.sqltypes.AutoString(), nullable=False),
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.PrimaryKeyConstraint('id')
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('song')
+    # ### end Alembic commands ###
diff --git a/project/migrations/versions/f68b489cdeb0_add_year.py b/project/migrations/versions/f68b489cdeb0_add_year.py
new file mode 100644
index 0000000..2badcc1
--- /dev/null
+++ b/project/migrations/versions/f68b489cdeb0_add_year.py
@@ -0,0 +1,31 @@
+"""add year
+
+Revision ID: f68b489cdeb0
+Revises: 842abcd80d3e
+Create Date: 2023-07-10 17:12:35.936572
+
+"""
+from alembic import op
+import sqlalchemy as sa
+import sqlmodel             # NEW
+
+
+# revision identifiers, used by Alembic.
+revision = 'f68b489cdeb0'
+down_revision = '842abcd80d3e'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('song', sa.Column('year', sa.Integer(), nullable=True))
+    op.create_index(op.f('ix_song_year'), 'song', ['year'], unique=False)
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_index(op.f('ix_song_year'), table_name='song')
+    op.drop_column('song', 'year')
+    # ### end Alembic commands ###
diff --git a/project/requirements.txt b/project/requirements.txt
index 5b650d0..003e864 100644
--- a/project/requirements.txt
+++ b/project/requirements.txt
@@ -1,5 +1,5 @@
-alembic==1.7.1
-asyncpg==0.24.0
-fastapi==0.68.1
-sqlmodel==0.0.4
-uvicorn==0.15.0
+alembic==1.11.1
+asyncpg==0.28.0
+fastapi==0.100.0
+sqlmodel==0.0.8
+uvicorn==0.22.0