diff --git a/toolchains/riscv-tools/riscv-isa-sim b/toolchains/riscv-tools/riscv-isa-sim
index 824ecdf6d..4156e0735 160000
--- a/toolchains/riscv-tools/riscv-isa-sim
+++ b/toolchains/riscv-tools/riscv-isa-sim
@@ -1 +1 @@
-Subproject commit 824ecdf6dc06ad0560001741ef1db861d4ed069f
+Subproject commit 4156e0735a6bd572be63d0cc92776ad45fd9edb6