diff --git a/src/isal/isa-l b/src/isal/isa-l
index 455fdded..d4e1c21a 160000
--- a/src/isal/isa-l
+++ b/src/isal/isa-l
@@ -1 +1 @@
-Subproject commit 455fdded4e2c1e658a74005d2cdc66ff1649b78d
+Subproject commit d4e1c21acbc61df30804004b61b068d9da7d3c6a