diff --git a/template/pyproject.toml.jinja b/template/pyproject.toml.jinja
index d214dc4..325377f 100644
--- a/template/pyproject.toml.jinja
+++ b/template/pyproject.toml.jinja
@@ -43,12 +43,12 @@ dependencies = [
   'pandas',      # Displaying tables in Jupyter notebooks
   'plotly',      # Interactive plots
   'py3Dmol',     # Visualisation of crystal structures
-  'jupyterlab',  # Jupyter notebooks
-  'pixi-kernel', # Pixi Jupyter kernel
 ]
 
 [project.optional-dependencies]
 dev = [
+  'jupyterlab',                      # Jupyter notebooks
+  'pixi-kernel',                     # Pixi Jupyter kernel
   'GitPython',                       # Interact with Git repositories
   'build',                           # Building the package
   'pre-commit',                      # Pre-commit hooks