diff --git a/intrinio_sdk/rest.py b/intrinio_sdk/rest.py
index 9f50904cc..b8aae502a 100644
--- a/intrinio_sdk/rest.py
+++ b/intrinio_sdk/rest.py
@@ -43,7 +43,7 @@ def __init__(self, resp):
 
     def getheaders(self):
         """Returns a dictionary of the response headers."""
-        return self.urllib3_response.getheaders()
+        return self.urllib3_response.headers
 
     def getheader(self, name, default=None):
         """Returns a given response header."""