diff --git a/external/type_safe b/external/type_safe
index c9ca37c..4fc976c 160000
--- a/external/type_safe
+++ b/external/type_safe
@@ -1 +1 @@
-Subproject commit c9ca37cc770a2dccc1483453742c54136b992760
+Subproject commit 4fc976c3b213e139729faacf2796a93d750503a1