diff --git a/toolchains/esp-tools/riscv-isa-sim b/toolchains/esp-tools/riscv-isa-sim
index 8feafa02..1c521216 160000
--- a/toolchains/esp-tools/riscv-isa-sim
+++ b/toolchains/esp-tools/riscv-isa-sim
@@ -1 +1 @@
-Subproject commit 8feafa0208c959c60cc53bc8235e16251c96d3d4
+Subproject commit 1c52121694b4390cabcafe7562da32ead8e6ca06