diff --git a/docs/source/_static/css/fix-code-colors.css b/docs/source/_static/css/fix-code-colors.css
deleted file mode 100644
index b353eac43..000000000
--- a/docs/source/_static/css/fix-code-colors.css
+++ /dev/null
@@ -1,25 +0,0 @@
-code.literal {
-  background: var(--color-inline-code-background) !important;
-}
-
-:root {
-  --color-inline-code-background: #f0f0f0;
-}
-
-@media (prefers-color-scheme: dark) {
-  :root {
-    --color-code-background: #202020;
-    --color-inline-code-background: hsl(0, 0%, 18%);
-  }
-
-  td.linenos pre {
-    background: #202020 !important;
-    color: #d0d0d0 !important;
-  }
-}
-
-@media (prefers-color-scheme: light) {
-  :root {
-    --color-inline-code-background: #f0f0f0;
-  }
-}
diff --git a/docs/source/developer-guide.rst b/docs/source/developer-guide.rst
index a3d6f692a..cc29dc301 100644
--- a/docs/source/developer-guide.rst
+++ b/docs/source/developer-guide.rst
@@ -92,7 +92,7 @@ In order to develop IDOM locally you'll first need to install the following:
     *   - NodeJS >= 14
         - https://nodejs.org/en/download/package-manager/
 
-    *   - NPM >= 7.7
+    *   - NPM >= 7.13
         - https://docs.npmjs.com/try-the-latest-stable-version-of-npm
 
 .. note::
diff --git a/requirements/build-docs.txt b/requirements/build-docs.txt
index 1c9bd2756..6e67679cc 100644
--- a/requirements/build-docs.txt
+++ b/requirements/build-docs.txt
@@ -1,6 +1,6 @@
-sphinx ==3.5.4
+sphinx ==4.1.2
 sphinx-autodoc-typehints ==1.7.0
-furo ==2020.10.13b12
+furo ==2021.07.28.b40
 sphinx-panels ==0.6.0
 setuptools_scm
 sphinx-copybutton ==0.3.0
diff --git a/src/idom/testing.py b/src/idom/testing.py
index 85bccb181..8c45867ab 100644
--- a/src/idom/testing.py
+++ b/src/idom/testing.py
@@ -44,7 +44,7 @@
 def create_simple_selenium_web_driver(
     driver_type: Type[WebDriver] = Chrome,
     driver_options: Optional[Any] = None,
-    implicit_wait_timeout: float = 5.0,
+    implicit_wait_timeout: float = 10.0,
     page_load_timeout: float = 5.0,
     window_size: Tuple[int, int] = (1080, 800),
 ) -> WebDriver: