diff --git a/src/cppgtfs b/src/cppgtfs
index df46e2f..251c8ae 160000
--- a/src/cppgtfs
+++ b/src/cppgtfs
@@ -1 +1 @@
-Subproject commit df46e2f92f69581571b3790112fbd9b6e22b8512
+Subproject commit 251c8aedf329a557fa95811e8bc2388fc6918cb7