diff --git a/lib/jsonapi_spec_helpers/helpers.rb b/lib/jsonapi_spec_helpers/helpers.rb
index 651eaed..6459325 100644
--- a/lib/jsonapi_spec_helpers/helpers.rb
+++ b/lib/jsonapi_spec_helpers/helpers.rb
@@ -80,24 +80,24 @@ def jsonapi_headers
       }
     end
 
-    def jsonapi_get(url, params: {})
-      get url, params: params, headers: jsonapi_headers
+    def jsonapi_get(url, params: {}, headers: {})
+      get url, params: params, headers: jsonapi_headers.merge(headers)
     end
 
-    def jsonapi_post(url, payload)
-      post url, params: payload.to_json, headers: jsonapi_headers
+    def jsonapi_post(url, payload: {}, headers: {})
+      post url, params: payload.to_json, headers: jsonapi_headers.merge(headers)
     end
 
-    def jsonapi_put(url, payload)
-      put url, params: payload.to_json, headers: jsonapi_headers
+    def jsonapi_put(url, payload: {}, headers: {})
+      put url, params: payload.to_json, headers: jsonapi_headers.merge(headers)
     end
 
-    def jsonapi_patch(url, payload)
-      patch url, params: payload.to_json, headers: jsonapi_headers
+    def jsonapi_patch(url, payload: {}, headers: {})
+      patch url, params: payload.to_json, headers: jsonapi_headers.merge(headers)
     end
 
-    def jsonapi_delete(url)
-      delete url, headers: jsonapi_headers
+    def jsonapi_delete(url, headers: {})
+      delete url, headers: jsonapi_headers.merge(headers)
     end
 
     def jsonapi_payload(input)