diff --git a/doc/code-cells.ipynb b/doc/code-cells.ipynb
index ecdf3877..c96b2c95 100644
--- a/doc/code-cells.ipynb
+++ b/doc/code-cells.ipynb
@@ -728,7 +728,7 @@
     "\n",
     "```html\n",
     "<!-- require.js is a mandatory dependency for jupyter-widgets -->\n",
-    "<script crossorigin=\"anonymous\" integrity=\"sha256-Ae2Vz/4ePdIu6ZyI/5ZGsYnb+m0JlOmKPjt6XZ9JJkA=\" src=\"https://cdnjs.cloudflare.com/ajax/libs/require.js/2.3.4/require.min.js\"></script>\n",
+    "<script crossorigin=\"anonymous\" integrity=\"sha256-Ae2Vz/4ePdIu6ZyI/5ZGsYnb+m0JlOmKPjt6XZ9JJkA=\" src=\"https://cdnjs.cloudflare.com/ajax/libs/require.js/2.3.7/require.min.js\"></script>\n",
     "<!-- jupyter-widgets JavaScript -->\n",
     "<script type=\"text/javascript\" src=\"https://unpkg.com/@jupyter-widgets/html-manager@^0.18.0/dist/embed-amd.js\"></script>\n",
     "<!-- JavaScript containing custom Jupyter widgets -->\n",
diff --git a/src/nbsphinx/__init__.py b/src/nbsphinx/__init__.py
index e597aed4..9fd2d51f 100644
--- a/src/nbsphinx/__init__.py
+++ b/src/nbsphinx/__init__.py
@@ -1629,7 +1629,7 @@ def config_inited(app, config):
 def load_requirejs(app):
     config = app.config
     if config.nbsphinx_requirejs_path is None:
-        config.nbsphinx_requirejs_path = 'https://cdnjs.cloudflare.com/ajax/libs/require.js/2.3.4/require.min.js'
+        config.nbsphinx_requirejs_path = 'https://cdnjs.cloudflare.com/ajax/libs/require.js/2.3.7/require.min.js'
     if config.nbsphinx_requirejs_options is None:
         config.nbsphinx_requirejs_options = {
             'integrity': 'sha256-Ae2Vz/4ePdIu6ZyI/5ZGsYnb+m0JlOmKPjt6XZ9JJkA=',