diff --git a/.github/workflows/build-special.yml b/.github/workflows/build-special.yml
index 873fa047c..c66703413 100644
--- a/.github/workflows/build-special.yml
+++ b/.github/workflows/build-special.yml
@@ -132,6 +132,7 @@ jobs:
         if: matrix.flag == 'system'
         run: |
           sudo apt-get install libeigen3-dev
+          sudo apt-get install metis
           echo "GTSAM_USE_SYSTEM_EIGEN=ON" >> $GITHUB_ENV
           echo "GTSAM_USE_SYSTEM_METIS=ON" >> $GITHUB_ENV