diff --git a/.versionbot/CHANGELOG.yml b/.versionbot/CHANGELOG.yml
index 52334da..6f19dc5 100644
--- a/.versionbot/CHANGELOG.yml
+++ b/.versionbot/CHANGELOG.yml
@@ -1,3 +1,51 @@
+- commits:
+    - subject: do not generate host keys
+      hash: 76a33b2fcf3652ded0ac0e826add86546e5a820c
+      body: ''
+      footer:
+        Change-type: major
+        change-type: major
+        Signed-off-by: Will Boyce <will@balena.io>
+        signed-off-by: Will Boyce <will@balena.io>
+      author: Will Boyce
+    - subject: add prometheus metrics server and basic metrics gathering
+      hash: f7678e383d5590675af46312c155d65b55c7be73
+      body: ''
+      footer:
+        Change-type: minor
+        change-type: minor
+        Signed-off-by: Will Boyce <will@balena.io>
+        signed-off-by: Will Boyce <will@balena.io>
+      author: Will Boyce
+    - subject: add `idle-timeout` config option
+      hash: 28c9395ca38a0c90405ddf905a1cfc85278dbbbf
+      body: ''
+      footer:
+        Change-type: patch
+        change-type: patch
+        Signed-off-by: Will Boyce <will@balena.io>
+        signed-off-by: Will Boyce <will@balena.io>
+      author: Will Boyce
+    - subject: switch to gliderlabs/ssh library
+      hash: 6f460eab649f1fde880a34ab7b8ce96d41e3d831
+      body: ''
+      footer:
+        Change-type: major
+        change-type: major
+        Signed-off-by: Will Boyce <will@balena.io>
+        signed-off-by: Will Boyce <will@balena.io>
+      author: Will Boyce
+    - subject: update to Go v1.13.5
+      hash: 1e18b590a61cb8ed4ff2d2e707423ef6938ee20e
+      body: ''
+      footer:
+        Change-type: patch
+        change-type: patch
+        Signed-off-by: Will Boyce <will@balena.io>
+        signed-off-by: Will Boyce <will@balena.io>
+      author: Will Boyce
+  version: 4.0.0
+  date: 2020-01-06T14:57:40.600Z
 - commits:
     - subject: update to Go v1.13.4
       hash: bb0fcb19321b89008fdc0ee578853b78f3ba536e
diff --git a/CHANGELOG.md b/CHANGELOG.md
index e01ae2e..874eda2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,14 @@ All notable changes to this project will be documented in this file
 automatically by Versionist. DO NOT EDIT THIS FILE MANUALLY!
 This project adheres to [Semantic Versioning](http://semver.org/).
 
+## v4.0.0 - 2020-01-06
+
+* Do not generate host keys [Will Boyce]
+* Add prometheus metrics server and basic metrics gathering [Will Boyce]
+* Add `idle-timeout` config option [Will Boyce]
+* Switch to gliderlabs/ssh library [Will Boyce]
+* Update to Go v1.13.5 [Will Boyce]
+
 ## v3.0.2 - 2019-11-20
 
 * Update to Go v1.13.4 [Will Boyce]