diff --git a/README.md b/README.md
index 7ce60b8c..a231358e 100644
--- a/README.md
+++ b/README.md
@@ -145,6 +145,7 @@ For library usage check [Docs.rs](https://docs.rs/rimage/latest/rimage/)
 
 - Resize
 - Quantization
+- Alpha premultiply
 
 ## Known bugs
 
diff --git a/src/cli.rs b/src/cli.rs
index 0776e344..c82b1bca 100644
--- a/src/cli.rs
+++ b/src/cli.rs
@@ -34,7 +34,8 @@ pub fn cli() -> Command {
 List of supported preprocessing options
 
 - Resize
-- Quantization"#})
+- Quantization
+- Alpha premultiply"#})
         .codecs()
 }