diff --git a/vendor/nim-ssz-serialization b/vendor/nim-ssz-serialization
index 6f831b79d..b5aa78cae 160000
--- a/vendor/nim-ssz-serialization
+++ b/vendor/nim-ssz-serialization
@@ -1 +1 @@
-Subproject commit 6f831b79df24af00c10e73e717cbe40d7d0e2439
+Subproject commit b5aa78cae197cc97277be050ba69ef9c5d33aad1