diff --git a/pyproject.toml b/pyproject.toml
index 17c048b..33d3e01 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,6 +20,7 @@ dependencies = [
     "matplotlib >=3.4.2",
     "lmfit >=1.0.2",
     "typer >=0.9.0",
+    "rich",
 ]
 
 [project.urls]