diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 427f34c..ae14862 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -96,7 +96,7 @@ jobs:
       # libx11-dev は Ubuntu 24.04 の時に必要になる模様
       - run: |
           sudo apt-get update
-          sudo apt-get -y install libva-dev libdrm-dev libx11-dev
+          sudo apt-get -y install libx11-dev
         if: ${{ matrix.platform.os == 'ubuntu' && matrix.platform.arch == 'x86_64' }}
       - run: |
           sudo apt-get -y install multistrap binutils-aarch64-linux-gnu
diff --git a/.github/workflows/e2e-test.yml b/.github/workflows/e2e-test.yml
index 7c236a4..19721e0 100644
--- a/.github/workflows/e2e-test.yml
+++ b/.github/workflows/e2e-test.yml
@@ -44,7 +44,7 @@ jobs:
       # libx11-dev は Ubuntu 24.04 の時に必要になる模様
       - run: |
           sudo apt-get update
-          sudo apt-get -y install libva2 libdrm2 libva-dev libdrm-dev libx11-dev portaudio19-dev
+          sudo apt-get -y install libva2 libdrm2 libx11-dev portaudio19-dev
       - name: Download openh264
         run: |
           curl -LO http://ciscobinary.openh264.org/libopenh264-${{ env.OPENH264_VERSION }}-linux64.7.so.bz2