diff --git a/shell.nix b/shell.nix
index 5033322..0183ac9 100644
--- a/shell.nix
+++ b/shell.nix
@@ -5,6 +5,7 @@ let
   python-with-my-packages = my-python.withPackages (p: with p; [
     icecream
     python-ctags3
+    jinja2
     # other python packages you want
   ]);
 in