diff --git a/cachier/pickle_core.py b/cachier/pickle_core.py
index 062cb96..10eac09 100644
--- a/cachier/pickle_core.py
+++ b/cachier/pickle_core.py
@@ -152,10 +152,34 @@ class _PickleCore(_BaseCore):
             return key, self._get_cache().get(key, None)
 
     def get_entry(self, args, kwds):
-        key = args + tuple(sorted(kwds.items()))
-        # print('key type={}, key={}'.format(type(key), key))
+        key = tuple(self.hash_args(key) for key in args + tuple(sorted(kwds.items())))
         return self.get_entry_by_key(key)
 
+    def hash_args(self, value):
+        try:
+            import pandas
+            if isinstance(value, pandas.DataFrame):
+                return(pandas.util.hash_pandas_object(value))
+        except ImportError:
+            pass
+        if hasattr(value, "to_bytes"):  # For numpy
+            try:
+                return hash(value.to_bytes())
+            except TypeError:
+                pass
+        elif hasattr(value, "__iter__"):  # For iterators
+            hash_array = []
+            for elem in value:
+                hash_array.append(value)
+            return tuple(hash_array)
+        elif hasattr(value, "items"):  # For dict
+            hash_array = []
+            for key, elem in value.items:
+                hash_array.append(key)
+                hash_array.append(elem)
+            return tuple(hash_array)
+        return hash(value)
+
     def set_entry(self, key, func_res):
         with self.lock:
             cache = self._get_cache()