diff --git a/.github/workflows/ci-py-only.yml b/.github/workflows/ci-py-only.yml
index b427954ac8..92fff3b016 100644
--- a/.github/workflows/ci-py-only.yml
+++ b/.github/workflows/ci-py-only.yml
@@ -42,7 +42,7 @@ jobs:
           swig libpcre3-dev libxml2-dev \
           libtbb-dev nlohmann-json3-dev \
           libocct-foundation-dev libocct-modeling-algorithms-dev libocct-modeling-data-dev libocct-ocaf-dev libocct-visualization-dev libocct-data-exchange-dev \
-          libhdf5-dev libcgal-dev
+          libhdf5-dev libcgal-dev libeigen3-dev
           
       - name: ccache
         uses: hendrikmuhs/ccache-action@v1
@@ -72,6 +72,7 @@ jobs:
                -DGMP_LIBRARY_DIR=/usr/lib/x86_64-linux-gnu \
                -DMPFR_LIBRARY_DIR=/usr/lib/x86_64-linux-gnu \
                -DHDF5_INCLUDE_DIR=/usr/include/hdf5/serial \
+               -DEIGEN_DIR=/usr/include/eigen3 \
              ../cmake
           sudo make -j $(nproc)
           sudo make install