diff --git a/CHANGELOG b/CHANGELOG
index ba734fb35..f42eaca27 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -2,6 +2,9 @@
 List of major changes and improvements between releases
 =======================================================
 
+Yosys 0.40 .. Yosys 0.41-dev
+--------------------------
+
 Yosys 0.39 .. Yosys 0.40
 --------------------------
  * New commands and options
diff --git a/Makefile b/Makefile
index e7ed6c9fe..6d81b627f 100644
--- a/Makefile
+++ b/Makefile
@@ -142,7 +142,7 @@ LIBS += -lrt
 endif
 endif
 
-YOSYS_VER := 0.40
+YOSYS_VER := 0.40+0
 
 # Note: We arrange for .gitcommit to contain the (short) commit hash in
 # tarballs generated with git-archive(1) using .gitattributes. The git repo
@@ -158,7 +158,7 @@ endif
 OBJS = kernel/version_$(GIT_REV).o
 
 bumpversion:
-#	sed -i "/^YOSYS_VER := / s/+[0-9][0-9]*$$/+`git log --oneline 0033808.. | wc -l`/;" Makefile
+	sed -i "/^YOSYS_VER := / s/+[0-9][0-9]*$$/+`git log --oneline a1bb025.. | wc -l`/;" Makefile
 
 # set 'ABCREV = default' to use abc/ as it is
 #