diff --git a/update-makefiles.sh b/update-makefiles.sh
index 8b82013..0f89dfc 100755
--- a/update-makefiles.sh
+++ b/update-makefiles.sh
@@ -14,8 +14,8 @@
 
 for p in $packages; do
   echo "Updating $p";
-  hidl-gen -Lmakefile -r android.hardware:hardware/interfaces $p;
-  hidl-gen -Landroidbp -r android.hardware:hardware/interfaces $p;
+  hidl-gen -Lmakefile -r android.hardware:hardware/interfaces -r android.hidl:system/libhidl/transport $p;
+  hidl-gen -Landroidbp -r android.hardware:hardware/interfaces -r android.hidl:system/libhidl/transport $p;
 done
 
 # subdirectories of hardware/interfaces which contain an Android.bp file