diff --git a/requirements.txt b/requirements.txt
index e19e917cb..492d145f7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,6 @@ retrying>=1.2.3,!=1.3.0 # Apache-2.0
 alembic>=0.7.2
 croniter>=0.3.4 # MIT License
 eventlet>=0.17.3
-iso8601>=0.1.9
 jsonpath-rw>=1.2.0,<2.0
 jsonschema>=2.0.0,<3.0.0
 kafka-python>=0.9.2 # Apache-2.0