diff --git a/contrib/cloudkitty.spec.in b/contrib/cloudkitty.spec.in
index 5863be34..0befce2c 100644
--- a/contrib/cloudkitty.spec.in
+++ b/contrib/cloudkitty.spec.in
@@ -15,7 +15,6 @@ BuildArch: noarch
 BuildRequires: git
 BuildRequires: python-ceilometerclient
 BuildRequires: python-keystoneclient
-BuildRequires: python-iso8601
 BuildRequires: python-stevedore
 BuildRequires: python-oslo-messaging
 BuildRequires: python-setuptools
@@ -83,7 +82,6 @@ Group: System Environment/Base
 
 Requires: python-ceilometerclient
 Requires: python-keystoneclient
-Requires: python-iso8601
 Requires: python-stevedore
 Requires: python-oslo-messaging
 Requires: python-setuptools
diff --git a/requirements.txt b/requirements.txt
index 72cc3125..b0456d1f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,6 @@ eventlet>=0.17.4
 keystonemiddleware>=2.0.0
 python-ceilometerclient>=1.0.13
 python-keystoneclient>=1.6.0
-iso8601>=0.1.9
 PasteDeploy>=1.5.0
 posix-ipc
 pecan>=1.0.0
diff --git a/rtd-requirements.txt b/rtd-requirements.txt
index 0bd26ce5..971a6cd9 100644
--- a/rtd-requirements.txt
+++ b/rtd-requirements.txt
@@ -6,7 +6,6 @@ eventlet>=0.17.4
 keystonemiddleware>=2.0.0
 python-ceilometerclient>=1.0.13
 python-keystoneclient>=1.6.0
-iso8601>=0.1.9
 PasteDeploy>=1.5.0
 posix-ipc
 pecan>=1.0.0