diff --git a/docs/conf.py b/docs/conf.py
index 24d6c651..caeb9329 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -81,6 +81,7 @@
         {"name": "Gallery", "url": "https://emsig.xyz/emg3d-gallery/gallery"},
         {"name": "emsig", "url": "https://emsig.xyz"},
     ],
+    'navigation_with_keys': True,
     # "use_edit_page_button": True,
 }
 
diff --git a/setup.py b/setup.py
index 2de0a1de..d7a0d3ca 100644
--- a/setup.py
+++ b/setup.py
@@ -29,6 +29,7 @@
     python_requires=">=3.9",
     install_requires=[
         "scipy>=1.9",
+        "numpy<2.0",
         "numba>=0.53",
         "empymod>=2.3.0",
     ],