diff --git a/.github/workflows/checks.yml b/.github/workflows/checks.yml
index 67c65fa39d..3617a00613 100644
--- a/.github/workflows/checks.yml
+++ b/.github/workflows/checks.yml
@@ -82,7 +82,7 @@ jobs:
 
     env:
       CFLAGS: -Werror
-      PACKAGES: "qt5 eigen pkg-config fftw libpng"
+      PACKAGES: "qt5 eigen@3 pkg-config fftw libpng"
 
     steps:
     - uses: actions/checkout@v1
@@ -91,7 +91,7 @@ jobs:
       run: |
          brew update || brew update     # https://github.com/Homebrew/brew/issues/2491#issuecomment-294207661
          brew install $PACKAGES || brew install $PACKAGES
-         brew link --force qt5
+         brew link --force qt5 eigen@3
 
     - name: configure
       run: ./configure -assert || { cat configure.log; false; }