diff --git a/.github/workflows/publish_documentation.yml b/.github/workflows/publish_documentation.yml
index 01d874a3e..e5fc173c0 100644
--- a/.github/workflows/publish_documentation.yml
+++ b/.github/workflows/publish_documentation.yml
@@ -17,11 +17,11 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - name: install PlantUML
+      - name: Install PlantUML
         run: sudo apt-get install -y plantuml
-      - name: install virtual environment
+      - name: Install virtual environment
         run: make install_venv -C docs/mkdocs
-      - name: build documentation
+      - name: Build documentation
         run: make build -C docs/mkdocs
-      - name: publish documentation
+      - name: Publish documentation
         run: make publish -C docs/mkdocs
diff --git a/docs/mkdocs/requirements.txt b/docs/mkdocs/requirements.txt
index 51fceb5d3..d51a6242c 100644
--- a/docs/mkdocs/requirements.txt
+++ b/docs/mkdocs/requirements.txt
@@ -30,7 +30,7 @@ mkdocs-simple-hooks==0.1.5
 nltk==3.7
 packaging==21.3
 plantuml==0.3.0
-plantuml-markdown==3.5.2
+plantuml-markdown==3.6.3
 Pygments==2.11.0
 pymdown-extensions==9.3
 pyparsing==3.0.8