diff --git a/update_external_sources.sh b/update_external_sources.sh
index 388c488..7fb5e26 100755
--- a/update_external_sources.sh
+++ b/update_external_sources.sh
@@ -2,9 +2,9 @@
 # Update source for glslang and LLVM
 # Copy necessary BIL pieces into glslang and LLVM
 
-BIL_REVISION=28725
+BIL_REVISION=28809
 LUNARGLASS_REVISION=1052
-GLSLANG_REVISION=28653
+GLSLANG_REVISION=28809
 
 BUILDDIR=$PWD
 BASEDIR=$BUILDDIR/..