diff --git a/monitorstack/utils/__init__.py b/monitorstack/utils/__init__.py
index 1061d1f..6c6baf3 100644
--- a/monitorstack/utils/__init__.py
+++ b/monitorstack/utils/__init__.py
@@ -123,7 +123,10 @@ class LocalCache(object):
 
         :returns: object
         """
-        return diskcache.Cache(directory=self.cache_path)
+        return diskcache.Cache(
+            directory=self.cache_path,
+            disk_pickle_protocol=2
+        )
 
     def lc_open(self):
         """Open shelved data.