diff --git a/requirements.txt b/requirements.txt
index 0a4ff4b8..b611a312 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,6 @@
 # process, which may cause wedges in the gate later.
 
 Babel>=1.3
-iso8601>=0.1.9
 oslo.config>=1.9.3  # Apache-2.0
 oslo.context>=0.2.0                     # Apache-2.0
 oslo.i18n>=1.5.0  # Apache-2.0