diff --git a/docs/conf.py b/docs/conf.py
index 61bd32e..8da3d53 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -34,7 +34,6 @@
     "sphinx_copybutton",
     "sphinx_design",
     "sphinx_external_toc",
-    "sphinx_panels",
     "sphinx_tabs.tabs",
     "sphinx_thebe",
     "sphinx_togglebutton",
@@ -90,8 +89,6 @@
 
 numfig = True
 
-panels_add_bootstrap_css = False
-
 source_suffix = {
     ".rst": "restructuredtext",
 }
diff --git a/requirements.txt b/requirements.txt
index e728abe..9634fa3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,8 +4,7 @@ jupyter-book
 matplotlib
 pandas
 sphinx-click
-sphinx-design
-sphinx-panels
+sphinx_design
 sphinx-tabs
 sphinxcontrib-youtube
 sphinxext-opengraph
diff --git a/setup.py b/setup.py
index 2598182..884794f 100644
--- a/setup.py
+++ b/setup.py
@@ -30,8 +30,9 @@
     zip_safe=True,
     include_package_data=True,
     install_requires=[
-        "sphinx-book-theme>=1.0.0",
         "sphinx>=5.0",
+        "sphinx-book-theme>=1.0.0",
+        "sphinx_design",
     ],
     packages=find_packages(),
     entry_points={"sphinx.html_themes": ["sphinx_pythia_theme = sphinx_pythia_theme"]},