diff --git a/vendor/nim-ssz-serialization b/vendor/nim-ssz-serialization
index 6688301e9..339708849 160000
--- a/vendor/nim-ssz-serialization
+++ b/vendor/nim-ssz-serialization
@@ -1 +1 @@
-Subproject commit 6688301e946b543f8d2677d0a944f9369e578628
+Subproject commit 3397088499cefc2e7aa5e73a56ad2d5b0f091735