diff --git a/.gitea/workflows/create-presentation.yml b/.gitea/workflows/create-presentation.yml
index 8d69bd7..daaec35 100644
--- a/.gitea/workflows/create-presentation.yml
+++ b/.gitea/workflows/create-presentation.yml
@@ -19,6 +19,9 @@ jobs:
       - name: "Install dependencies"
         run: sudo apt-get update && sudo apt-get install pandoc nodejs texlive-full -y
 
+      - name: "Install mermaid"
+        run: npm i -g @mermaid-js/mermaid-cli
+
       - name: "Build .deb"
         run: cd ./Defensio && ./pandoc.sh
       - name: "Create release"