diff --git a/Makefile b/Makefile
index 06613c20a..5aacc0f1a 100644
--- a/Makefile
+++ b/Makefile
@@ -155,7 +155,7 @@ ifeq ($(OS), Haiku)
 CXXFLAGS += -D_DEFAULT_SOURCE
 endif
 
-YOSYS_VER := 0.47+61
+YOSYS_VER := 0.47+66
 
 # Note: We arrange for .gitcommit to contain the (short) commit hash in
 # tarballs generated with git-archive(1) using .gitattributes. The git repo