diff --git a/initdb.py b/initdb.py
index 55eb76c71..d00c0eeb9 100644
--- a/initdb.py
+++ b/initdb.py
@@ -4,7 +4,8 @@ import hashlib
 import random
 
 from datetime import datetime, timedelta
-from peewee import SqliteDatabase, create_model_tables, drop_model_tables
+from peewee import (SqliteDatabase, create_model_tables, drop_model_tables,
+                    savepoint_sqlite)
 
 from data.database import *
 from data import model
@@ -111,7 +112,6 @@ def __generate_repository(user, name, description, is_public, permissions,
 
   return repo
 
-from util.dbutil import savepoint_sqlite
 
 db_initialized_for_testing = False
 testcases = {}
diff --git a/requirements.txt b/requirements.txt
index ce9a22c54..98697d7b6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,7 +23,7 @@ lockfile==0.9.1
 marisa-trie==0.5.1
 mixpanel-py==3.0.0
 paramiko==1.12.0
-peewee==2.1.7
+peewee==2.2.0
 py-bcrypt==0.4
 pyPdf==1.13
 pycrypto==2.6.1
diff --git a/util/dbutil.py b/util/dbutil.py
deleted file mode 100644
index 4e565abca..000000000
--- a/util/dbutil.py
+++ /dev/null
@@ -1,60 +0,0 @@
-import uuid
-
-# Note: These savepoint classes are implemented in peewee, but not the version we have. Copied here from https://github.com/coleifer/peewee/blob/b657d08a14e4cdafee417111ccba62ede9344222/peewee.py
-
-class savepoint(object):
-    def __init__(self, db, sid=None):
-        self.db = db
-        _compiler = db.compiler()
-        self.sid = sid or 's' + uuid.uuid4().get_hex()
-        self.quoted_sid = _compiler.quote(self.sid)
-
-    def _execute(self, query):
-        self.db.execute_sql(query, require_commit=False)
-
-    def commit(self):
-        self._execute('RELEASE SAVEPOINT %s;' % self.quoted_sid)
-
-    def rollback(self):
-        self._execute('ROLLBACK TO SAVEPOINT %s;' % self.quoted_sid)
-
-    def __enter__(self):
-        self._orig_autocommit = self.db.get_autocommit()
-        self.db.set_autocommit(False)
-        self._execute('SAVEPOINT %s;' % self.quoted_sid)
-        return self
-
-    def __exit__(self, exc_type, exc_val, exc_tb):
-        try:
-            if exc_type:
-                self.rollback()
-            else:
-                try:
-                    self.commit()
-                except:
-                    self.rollback()
-                    raise
-        finally:
-            self.db.set_autocommit(self._orig_autocommit)
-
-
-class savepoint_sqlite(savepoint):
-    def __enter__(self):
-        conn = self.db.get_conn()
-        # For sqlite, the connection's isolation_level *must* be set to None.
-        # The act of setting it, though, will break any existing savepoints,
-        # so only write to it if necessary.
-        if conn.isolation_level is not None:
-            self._orig_isolation_level = conn.isolation_level
-            conn.isolation_level = None
-        else:
-            self._orig_isolation_level = None
-        super(savepoint_sqlite, self).__enter__()
-
-    def __exit__(self, exc_type, exc_val, exc_tb):
-        try:
-            return super(savepoint_sqlite, self).__exit__(
-                exc_type, exc_val, exc_tb)
-        finally:
-            if self._orig_isolation_level is not None:
-                self.db.get_conn().isolation_level = self._orig_isolation_level