diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 00000000..d391b395
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,14 @@
+# Changelog
+All notable changes to this project will be documented in this file.
+
+## [3.1.2] - 2019-06-06
+### Added
+- ws connect has a -x option to disable per message deflate
+- Add WebSocket::disablePerMessageDeflate() option.
+
+## [3.0.0] - 2019-06-xx
+### Changed
+- TLS, aka SSL works on Windows (websocket and http clients)
+- ws command line tool build on Windows
+- Async API for HttpClient
+- HttpClient API changed to use shared_ptr for response and request
diff --git a/DOCKER_VERSION b/DOCKER_VERSION
index 94ff29cc..ef538c28 100644
--- a/DOCKER_VERSION
+++ b/DOCKER_VERSION
@@ -1 +1 @@
-3.1.1
+3.1.2