diff --git a/app/__init__.py b/app/__init__.py
index e034def2a..813e6e38f 100644
--- a/app/__init__.py
+++ b/app/__init__.py
@@ -7,7 +7,7 @@ from flask import _request_ctx_stack, request, g, jsonify
 from flask_sqlalchemy import SQLAlchemy
 from flask_marshmallow import Marshmallow
 from flask_migrate import Migrate
-from monotonic import monotonic
+from time import monotonic
 from notifications_utils.clients.zendesk.zendesk_client import ZendeskClient
 from notifications_utils.clients.statsd.statsd_client import StatsdClient
 from notifications_utils.clients.redis.redis_client import RedisClient
diff --git a/app/clients/email/aws_ses.py b/app/clients/email/aws_ses.py
index b7d24b245..c801bb3c5 100644
--- a/app/clients/email/aws_ses.py
+++ b/app/clients/email/aws_ses.py
@@ -1,7 +1,7 @@
 import boto3
 import botocore
 from flask import current_app
-from monotonic import monotonic
+from time import monotonic
 from notifications_utils.recipients import InvalidEmailError
 
 from app.clients import STATISTICS_DELIVERED, STATISTICS_FAILURE
diff --git a/app/clients/sms/firetext.py b/app/clients/sms/firetext.py
index 8f650ff79..06315f8cd 100644
--- a/app/clients/sms/firetext.py
+++ b/app/clients/sms/firetext.py
@@ -1,7 +1,7 @@
 import json
 import logging
 
-from monotonic import monotonic
+from time import monotonic
 from requests import request, RequestException
 
 from app.clients.sms import (SmsClient, SmsClientResponseException)
diff --git a/app/clients/sms/mmg.py b/app/clients/sms/mmg.py
index 55388119a..b122d45dc 100644
--- a/app/clients/sms/mmg.py
+++ b/app/clients/sms/mmg.py
@@ -1,5 +1,5 @@
 import json
-from monotonic import monotonic
+from time import monotonic
 from requests import (request, RequestException)
 from app.clients.sms import (SmsClient, SmsClientResponseException)
 
diff --git a/requirements.txt b/requirements.txt
index c4eafdbcc..9c2f9cc9b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,7 +13,6 @@ iso8601==0.1.12
 jsonschema==2.6.0
 marshmallow-sqlalchemy==0.13.2
 marshmallow==2.15.1
-monotonic==1.5
 psycopg2-binary==2.7.4
 PyJWT==1.6.1
 SQLAlchemy==1.2.6