diff --git a/.github/workflows/toranj.yml b/.github/workflows/toranj.yml
index 667ff98e7..222f4dc30 100644
--- a/.github/workflows/toranj.yml
+++ b/.github/workflows/toranj.yml
@@ -134,11 +134,8 @@ jobs:
       env:
         GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
       run: |
-        sudo dpkg --add-architecture i386
         sudo apt-get update
-        sudo apt-get --no-install-recommends install -y clang-10 clang++-10 ninja-build python3-setuptools python3-wheel llvm lcov
-        sudo apt-get --no-install-recommends install -y g++-multilib libreadline-dev:i386 libncurses-dev:i386
-        python3 -m pip install -r tests/scripts/thread-cert/requirements.txt
+        sudo apt-get --no-install-recommends install -y ninja-build
     - name: Build & Run
       run: |
         ./tests/toranj/build.sh all