diff --git a/rdbtools/memprofiler.py b/rdbtools/memprofiler.py
index 8461903..c2e58c8 100644
--- a/rdbtools/memprofiler.py
+++ b/rdbtools/memprofiler.py
@@ -4,7 +4,10 @@
     from rdbtools.utils import namedtuple
 
 import random
-import json
+try:
+    import json
+except ImportError:
+    import simplejson as json
 
 from rdbtools.parser import RdbCallback
 from rdbtools.callbacks import encode_key