diff --git a/scripts/imgtool/__init__.py b/scripts/imgtool/__init__.py
index 09549c7..ae25718 100644
--- a/scripts/imgtool/__init__.py
+++ b/scripts/imgtool/__init__.py
@@ -1,4 +1,4 @@
-# Copyright 2017 Linaro Limited
+# Copyright 2017-2020 Linaro Limited
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -12,4 +12,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-imgtool_version = "1.6.0"
+imgtool_version = "1.7.0a1"