diff --git a/ref_gl/gl4es b/ref_gl/gl4es
index db0218b1..6f4c3da3 160000
--- a/ref_gl/gl4es
+++ b/ref_gl/gl4es
@@ -1 +1 @@
-Subproject commit db0218b1616a6e18be8cf17f33118d1ffc405993
+Subproject commit 6f4c3da3e36d6b425c11c50202e57de2c28dd33b