diff --git a/intrinio_sdk/api_client.py b/intrinio_sdk/api_client.py
index 38145a95..d92d749a 100644
--- a/intrinio_sdk/api_client.py
+++ b/intrinio_sdk/api_client.py
@@ -286,12 +286,12 @@ def __deserialize(self, data, klass):
 
         if type(klass) == str:
             if klass.startswith('list['):
-                sub_kls = re.match('list\[(.*)\]', klass).group(1)
+                sub_kls = re.match(r'list\[(.*)]', klass).group(1)
                 return [self.__deserialize(sub_data, sub_kls)
                         for sub_data in data]
 
             if klass.startswith('dict('):
-                sub_kls = re.match('dict\(([^,]*), (.*)\)', klass).group(2)
+                sub_kls = re.match(r'dict\(([^,]*), (.*)\)', klass).group(2)
                 return {k: self.__deserialize(v, sub_kls)
                         for k, v in six.iteritems(data)}