diff --git a/apps-external/viewer b/apps-external/viewer
index a73645432829c..4021734489424 160000
--- a/apps-external/viewer
+++ b/apps-external/viewer
@@ -1 +1 @@
-Subproject commit a73645432829cd471de3453c46b6dd9eda36ba18
+Subproject commit 4021734489424afabb16053f38a610f126feb3db