diff --git a/requirements.txt b/requirements.txt
index da4a0aca..6323b210 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,6 @@ iso8601>=0.1.11 # MIT
 netaddr>=0.7.18 # BSD
 requests>=2.14.2 # Apache-2.0
 python-keystoneclient>=3.8.0 # Apache-2.0
-simplejson>=3.5.1 # MIT
 stevedore>=1.20.0 # Apache-2.0
 Babel!=2.4.0,>=2.3.4 # BSD
 oslo.i18n>=3.15.3 # Apache-2.0
diff --git a/tackerclient/client.py b/tackerclient/client.py
index c565248c..67acc6fe 100644
--- a/tackerclient/client.py
+++ b/tackerclient/client.py
@@ -14,10 +14,7 @@
 #    under the License.
 #
 
-try:
-    import json
-except ImportError:
-    import simplejson as json
+import json
 import logging
 import os