diff --git a/src/cppgtfs b/src/cppgtfs
index 5dbabb8..3cd9b7e 160000
--- a/src/cppgtfs
+++ b/src/cppgtfs
@@ -1 +1 @@
-Subproject commit 5dbabb8ee789c5da6c3e6a346aa82acf1c9baa2c
+Subproject commit 3cd9b7ecdaab216c07dda65a670352be22271fca