diff --git a/.github/workflows/documentation.yml b/.github/workflows/documentation.yml
index 850517460..bc75e0bf4 100644
--- a/.github/workflows/documentation.yml
+++ b/.github/workflows/documentation.yml
@@ -55,7 +55,6 @@ jobs:
 
       - name: Install Python dependencies
         run: |
-          pip install .
           pip install \
             "cairosvg>=2.5" \
             "mkdocs-git-committers-plugin-2>=1.1.1" \
@@ -77,7 +76,6 @@ jobs:
           git clone --depth 1 https://${GH_TOKEN}@github.com/squidfunk/mkdocs-material-insiders.git
           pip install -e mkdocs-material-insiders
           cp mkdocs-material-insiders/mkdocs.yml mkdocs.yml
-          echo "THEME_DIR=mkdocs-material-insiders/material" >> $GITHUB_ENV
 
       - name: Deploy documentation
         env:
diff --git a/mkdocs.yml b/mkdocs.yml
index ed0e5c0af..603dcec3e 100755
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -35,19 +35,7 @@ copyright: Copyright © 2016 - 2022 Martin Donath
 
 # Configuration
 theme:
-  name: null
-  custom_dir: !ENV [THEME_DIR, "material"]
-
-  # Static files
-  static_templates:
-    - 404.html
-
-  # Don't include MkDocs' JavaScript
-  include_search_page: false
-  search_index_only: true
-
-  # Default values, taken from mkdocs_theme.yml
-  language: en
+  name: material
   features:
     # - announce.dismiss
     - content.code.annotate