diff --git a/docs/default.nix b/docs/default.nix
index 28fb890e3..ce218538a 100644
--- a/docs/default.nix
+++ b/docs/default.nix
@@ -9,9 +9,6 @@ pkgs.stdenv.mkDerivation {
     ++ (with pkgs.python3Packages; [
       mkdocs
       mkdocs-material
-      mkdocs-drawio-exporter
-      mkdocs-swagger-ui-tag
-      plantuml-markdown
     ]);
 
   buildPhase = ''
diff --git a/docs/mkdocs.yml b/docs/mkdocs.yml
index b943a2747..18a4d49dd 100644
--- a/docs/mkdocs.yml
+++ b/docs/mkdocs.yml
@@ -17,7 +17,6 @@ markdown_extensions:
   - pymdownx.highlight:
       use_pygments: true
   - pymdownx.superfences
-  - plantuml_markdown
   - toc:
       title: On this page