diff --git a/immutable-data.md b/immutable-data.md
index 52e16ae..83df721 100644
--- a/immutable-data.md
+++ b/immutable-data.md
@@ -161,6 +161,10 @@ A collection of functions to perform immutable operations on plain JavaScript ob
   https://github.com/sdgluck/mewt  
   Immutability in under one kilobyte.  Makes all native array methods immutable operations.  Two simple methods $set and $unset for objects and arrays.
   
+- **immutable-functions**  
+  https://github.com/jkbailey/immutable-functions  
+  A simple, easy, straight forward approach to update immutable data.
+  
   
 
 #### Immutable/Redux Interop