diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 4e89ed97..6a2c02b1 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -135,7 +135,7 @@ jobs:
       - name: Zip HTML Docu
         run: zip -q -9 -r html.zip html
       - name: Store HTML Docu
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: doxygen-html
           path: html.zip
diff --git a/.github/workflows/pages.yml b/.github/workflows/pages.yml
index c94b4b18..5d6283b2 100644
--- a/.github/workflows/pages.yml
+++ b/.github/workflows/pages.yml
@@ -11,7 +11,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: ssciwr/doxygen-install@v1
         with:
-          version: "1.9.6"
+          version: "1.20.0"
       - uses: ts-graphviz/setup-graphviz@v1
       - name: Prepare Doxygen Config
         run: echo "PROJECT_NUMBER = ${GITHUB_REF}" >> Doxyfile