diff --git a/README.md b/README.md
index d7400c9..e628b29 100644
--- a/README.md
+++ b/README.md
@@ -32,6 +32,20 @@ Currently supports booleans and strings. (See [#1](https://github.com/sharpshark
 .search('name', 'steele')
 ```
 
+#### Filter
+
+Simpler version of search using a custom function in the chain.
+
+```javascript
+.filter(a => a.age >= 21)
+```
+
+##### By Key
+
+```javascript
+.filterBy('age', x => x >= 21)
+```
+
 #### Sort
 
 Currently supports booleans and strings. (See [#1](https://github.com/sharpshark28/json-query-chain/issues/2) for Integer Support)