diff --git a/libraries/source/spidermonkey/build.sh b/libraries/source/spidermonkey/build.sh
index 8e00a4214a..c4abb9309e 100755
--- a/libraries/source/spidermonkey/build.sh
+++ b/libraries/source/spidermonkey/build.sh
@@ -9,7 +9,7 @@ cd "$(dirname "$0")"
 PV=128.13.0
 FOLDER="mozjs-${PV}"
 # If same-version changes are needed, increment this.
-LIB_VERSION="${PV}+wfg5"
+LIB_VERSION="${PV}+wfg6"
 LIB_NAME="mozjs128"
 
 build_archive()