Apache Mynewt 1.9.0 release
diff --git a/README.md b/README.md
index af84246..6369340 100644
--- a/README.md
+++ b/README.md
@@ -32,6 +32,6 @@
 Build the newtmgr tool as follows:
 
 1. Unpack newtmgr source.
-2. Rename resulting `apache-mynewt-newtmgr-1.3.0` directory to `$GOPATH/src/mynewt.apache.org/newtmgr`
+2. Rename resulting `apache-mynewt-newtmgr-1.9.0` directory to `$GOPATH/src/mynewt.apache.org/newtmgr`
 3. `cd $GOPATH/src/mynewt.apache.org/newtmgr/newtmgr`
 4. `GO111MODULE=on go build`
diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index 952b32a..377b4f0 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -1,6 +1,6 @@
 # RELEASE NOTES
 
-18 March 2020 - Apache Newtmgr v1.8.0
+24 March 2021 - Apache Newtmgr v1.9.0
 
 For full release notes, please visit the
 [Apache Mynewt Wiki](https://cwiki.apache.org/confluence/display/MYNEWT/Release+Notes).
@@ -12,9 +12,8 @@
 
 New features in this version of newtmgr include:
 
-* new '"shell exec" command for executing specified CLI command on target device
-* log show now includes imghash
-* multi-image support
+* support for MacOS Mojave/Catalina
+* DFU speed optimizations
 * various bugfixes
 
 If working on next-generation build and source package management systems
diff --git a/newtmgr/newtmgr.go b/newtmgr/newtmgr.go
index 80502b5..a819b7b 100644
--- a/newtmgr/newtmgr.go
+++ b/newtmgr/newtmgr.go
@@ -77,7 +77,7 @@
 		ExeName:       "newtmgr",
 		ShortName:     "Newtmgr",
 		LongName:      "Apache Newtmgr",
-		VersionString: "1.9.0-dev",
+		VersionString: "1.10.0-dev",
 		CfgFilename:   ".newtmgr.cp.json",
 	}