diff --git a/pkgs/by-name/ot/oterm/package.nix b/pkgs/by-name/ot/oterm/package.nix
index c9cae817ef92..fa2d2a68036c 100644
--- a/pkgs/by-name/ot/oterm/package.nix
+++ b/pkgs/by-name/ot/oterm/package.nix
@@ -40,6 +40,7 @@ python3Packages.buildPythonApplication rec {
     python-dotenv
     rich-pixels
     textual
+    textualeffects
     typer
   ];