diff --git a/Makefile b/Makefile
index f08c6c3bb8c..313de44d56d 100644
--- a/Makefile
+++ b/Makefile
@@ -143,7 +143,7 @@ LIBS += -lrt
 endif
 endif
 
-YOSYS_VER := 0.42+36
+YOSYS_VER := 0.42+40
 
 # Note: We arrange for .gitcommit to contain the (short) commit hash in
 # tarballs generated with git-archive(1) using .gitattributes. The git repo