diff --git a/rsem-gff3-to-gtf b/rsem-gff3-to-gtf
index d544004..ce6e1fd 100755
--- a/rsem-gff3-to-gtf
+++ b/rsem-gff3-to-gtf
@@ -153,6 +153,13 @@ class Transcript:
 		self.index = 0
 		return self
 
+	def next(self):
+		if self.index == len(self.results):
+			raise StopIteration
+		interval = self.results[self.index]
+		self.index += 1
+		return interval
+
 	def __next__(self):
 		if self.index == len(self.results):
 			raise StopIteration