diff --git a/libforget/mastodon.py b/libforget/mastodon.py
index c1d1b07..746544b 100644
--- a/libforget/mastodon.py
+++ b/libforget/mastodon.py
@@ -5,7 +5,6 @@ from model import MastodonApp, Account, OAuthToken, Post
 from requests import head
 from app import db, sentry
 from math import inf
-import iso8601
 from libforget.exceptions import TemporaryError
 from functools import lru_cache
 
diff --git a/requirements.txt b/requirements.txt
index c35c045..8b8a0fa 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,7 +21,6 @@ Flask-SQLAlchemy==2.2
 gunicorn==19.7.1
 honcho==1.0.1
 idna==2.6
-iso8601==0.1.12
 itsdangerous==0.24
 Jinja2==2.9.6
 kombu==4.1.0