diff --git a/.github/workflows/test-core-linux.yml b/.github/workflows/test-core-linux.yml
index 0337181b..75d3abc9 100644
--- a/.github/workflows/test-core-linux.yml
+++ b/.github/workflows/test-core-linux.yml
@@ -30,6 +30,8 @@ jobs:
           wget -O firefox-setup.tar.bz2 "https://download.mozilla.org/?product=firefox-latest&os=linux64"
           tar xjf firefox-setup.tar.bz2 -C /opt/
           sudo ln -s /opt/firefox/firefox /usr/bin/firefox
+          sudo chmod 755 /opt/firefox
+          sudo chmod 755 /opt/firefox/firefox
           rm -f firefox-setup.tar.bz2
       - name: Download geckodriver
         uses: nick-fields/retry@v2