diff --git a/solar/dblayer/lfu_cache.py b/solar/dblayer/lfu_cache.py
index 7040e30e..4970f6d6 100644
--- a/solar/dblayer/lfu_cache.py
+++ b/solar/dblayer/lfu_cache.py
@@ -68,6 +68,9 @@ class LFUCache(object):
         else:
             return self == other
 
+    def __ne__(self, other):
+        return not self.__eq__(other)
+
     def __setitem__(self, item, value):
         self.set(item, value)
 
diff --git a/solar/dblayer/proxy.py b/solar/dblayer/proxy.py
index b4e48c8c..fd5215d4 100644
--- a/solar/dblayer/proxy.py
+++ b/solar/dblayer/proxy.py
@@ -34,5 +34,8 @@ class DBLayerProxy(wrapt.ObjectProxy):
             return self.__wrapped__ == other
         return self.__wrapped__ == other.__wrapped__
 
+    def __ne__(self, other):
+        return not self.__eq__(other)
+
     def __repr__(self):
         return "<P: %r>" % self.__wrapped__
diff --git a/solar/dblayer/solar_models.py b/solar/dblayer/solar_models.py
index 9179bc14..a332ec6c 100644
--- a/solar/dblayer/solar_models.py
+++ b/solar/dblayer/solar_models.py
@@ -1087,6 +1087,9 @@ class Task(Model):
             return self.key == other
         return self.key == other.key
 
+    def __ne__(self, other):
+        return not self.__eq__(other)
+
     def __repr__(self):
         return 'Task(execution={} name={})'.format(self.execution, self.name)