diff --git a/docs/moment/10-plugins/23-immutable.md b/docs/moment/10-plugins/23-immutable.md
new file mode 100644
index 00000000..cef1a49c
--- /dev/null
+++ b/docs/moment/10-plugins/23-immutable.md
@@ -0,0 +1,28 @@
+---
+title: Immutable Moment.js
+signature: |
+  npm install moment-immutable --save
+---
+
+
+This plugin makes moment.js immutable by auto cloning the `Moment` during all mutable actions.
+
+Made by [Smartin85](https://github.com/smartin85).
+
+```js
+// Without moment-immutable
+var january1st = moment("2017-01-01");
+var february1st = january1st.add(1, "month");
+
+january1st.format();    // "2017-02-01T00:00:00+01:00" - oh no
+february1st.format();   // "2017-02-01T00:00:00+01:00"
+
+// With moment-immutable
+var january1st = moment("2017-01-01");
+var february1st = january1st.add(1, "month");
+
+january1st.format();    // "2017-01-01T00:00:00+01:00" - yeah
+february1st.format();   // "2017-02-01T00:00:00+01:00"
+```
+
+The repository is located at [github.com/smartin85/moment-immutable](https://github.com/smartin85/moment-immutable).