diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1fb8acb1..e48219b3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,19 @@
 # CHANGELOG: Freeboard
 
+### v2.1.0
+
+- **Added**: Ability to limit map zoom to min / max of displayed charts.
+
+- **Fix**: Issue handling port value when no port is specified in host url.
+
+### v2.0.2
+
+- **Fix** Update signalk-client-angular library to address issues creating resources when not using ssl.
+
+### v2.0.1
+
+- **Fix** `tslib` dependency`.
+
 ### v2.0.0
 
 __** BREAKING CHANGES **__ 
diff --git a/package.json b/package.json
index 65361e6c..774b985a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@signalk/freeboard-sk",
-  "version": "2.0.2",
+  "version": "2.1.0",
   "description": "Openlayers chart plotter implementation for Signal K",
   "keywords": [
     "signalk-webapp",
diff --git a/src/assets/help/index.html b/src/assets/help/index.html
index fdb1837c..781b840b 100644
--- a/src/assets/help/index.html
+++ b/src/assets/help/index.html
@@ -398,6 +398,12 @@ <h4>Display</h4>
               <i>Available only on supported devices.</i>
             </li>
 
+            <li class="nobullet">
+              <i class="material-icons">zoom_in_map</i>
+              <b>Constrain map zoom:</b>
+              Limit minimum and maximum zoom levels to the zoom extent of the selected charts.
+            </li>
+
             <li class="nobullet">
               <i class="material-icons">add_location</i>
               <b>Drop Waypoint:</b>