diff --git a/Readme.md b/Readme.md
index e78eaa3..e20e12e 100644
--- a/Readme.md
+++ b/Readme.md
@@ -52,7 +52,7 @@ $ aivmlib --help
 
  Usage: aivmlib [OPTIONS] COMMAND [ARGS]...
 
- Aivis Voice Model File (.aivm) Utility Library
+ Aivis Voice Model File (.aivm/.aivmx) Utility Library
 
 ╭─ Options ─────────────────────────────────────────────────────────────────────────╮
 │ --install-completion          Install completion for the current shell.           │
diff --git a/aivmlib/__main__.py b/aivmlib/__main__.py
index ee89c16..2fdc208 100755
--- a/aivmlib/__main__.py
+++ b/aivmlib/__main__.py
@@ -12,7 +12,7 @@
 from aivmlib.schemas.aivm_manifest import ModelArchitecture
 
 
-app = typer.Typer(help='Aivis Voice Model File (.aivm) Utility Library')
+app = typer.Typer(help='Aivis Voice Model File (.aivm/.aivmx) Utility Library')
 
 
 @app.command()
diff --git a/pyproject.toml b/pyproject.toml
index 8050ba4..e3a8f89 100755
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,7 +1,7 @@
 [tool.poetry]
 name = "aivmlib"
 version = "1.0.0"
-description = "Aivis Voice Model File (.aivm) Utility Library"
+description = "Aivis Voice Model File (.aivm/.aivmx) Utility Library"
 homepage = "https://github.com/Aivis-Project/aivmlib"
 repository = "https://github.com/Aivis-Project/aivmlib"
 documentation = "https://github.com/Aivis-Project/aivmlib"