diff --git a/Makefile b/Makefile
index c2e4b38da..5e3b19449 100644
--- a/Makefile
+++ b/Makefile
@@ -140,7 +140,7 @@ LIBS += -lrt
 endif
 endif
 
-YOSYS_VER := 0.41.91
+YOSYS_VER := REPLACEME
 
 # Note: We arrange for .gitcommit to contain the (short) commit hash in
 # tarballs generated with git-archive(1) using .gitattributes. The git repo