diff --git a/main.go b/main.go
index f8c82c9..ba46aa8 100644
--- a/main.go
+++ b/main.go
@@ -656,11 +656,12 @@ func Get(url string) (response *Response, err error) {
 	return
 }
 
-func Post(url string, body io.Reader) (response *Response, err error) {
+func Post(url string, contentType string, body io.Reader) (response *Response, err error) {
 	request, err := NewRequest("POST", url, body)
 	if err != nil {
 		return
 	}
+	request.Header.Add("Content-Type", contentType)
 	response, err = Fetch.Do(request)
 	return
 }