diff --git a/CHANGELOG b/CHANGELOG
index 15987a205..ff22a01e2 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -2,6 +2,9 @@
 List of major changes and improvements between releases
 =======================================================
 
+Yosys 0.13 .. Yosys 0.13-dev
+--------------------------
+
 Yosys 0.12 .. Yosys 0.13
 --------------------------
 
diff --git a/Makefile b/Makefile
index 5e47230d6..8c7bc98d0 100644
--- a/Makefile
+++ b/Makefile
@@ -129,12 +129,12 @@ LDFLAGS += -rdynamic
 LDLIBS += -lrt
 endif
 
-YOSYS_VER := 0.13
+YOSYS_VER := 0.13+0
 GIT_REV := $(shell git -C $(YOSYS_SRC) rev-parse --short HEAD 2> /dev/null || echo UNKNOWN)
 OBJS = kernel/version_$(GIT_REV).o
 
 bumpversion:
-#	sed -i "/^YOSYS_VER := / s/+[0-9][0-9]*$$/+`git log --oneline 2156e20.. | wc -l`/;" Makefile
+	sed -i "/^YOSYS_VER := / s/+[0-9][0-9]*$$/+`git log --oneline 8b1eafc.. | wc -l`/;" Makefile
 
 # set 'ABCREV = default' to use abc/ as it is
 #