diff --git a/third_party/tools/yosys-slang b/third_party/tools/yosys-slang
index e23228f4b4ec5..ef1989a08eb1e 160000
--- a/third_party/tools/yosys-slang
+++ b/third_party/tools/yosys-slang
@@ -1 +1 @@
-Subproject commit e23228f4b4ec5ec0b4b17f1f675debfa29458665
+Subproject commit ef1989a08eb1e98a5c9fccb1a7c509fdd3db0bda