diff --git a/.github/workflows/tmp-check-doc.yml b/.github/workflows/tmp-check-doc.yml
index 5e76c05b831..ce7c26b3689 100644
--- a/.github/workflows/tmp-check-doc.yml
+++ b/.github/workflows/tmp-check-doc.yml
@@ -20,10 +20,9 @@ jobs:
           submodules: recursive
       - name: Install packages
         run : |
-          sudo apt-get install graphviz
+          sudo apt-get install graphviz plantuml clang-9 libclang-9-dev
       - name: Fetch recent doxygen (1.9.8)
         run: |
-          sudo apt-get install clang-9 libclang-9-dev
           wget https://sourceforge.net/projects/doxygen/files/rel-1.9.8/doxygen-1.9.8.linux.bin.tar.gz -O doxygen.tar.gz
           tar -zxvf doxygen.tar.gz -C doxygen --wildcards "*/bin"
           mv doxygen/*/bin doxygen/