github/workflows: bump klayout distro
diff --git a/.github/workflows/user_project_ci.yml b/.github/workflows/user_project_ci.yml
index 70b9199..0d28123 100644
--- a/.github/workflows/user_project_ci.yml
+++ b/.github/workflows/user_project_ci.yml
@@ -246,7 +246,7 @@
         key: ${{ runner.os }}-gds-${{ github.run_id }}
     - name: install klayout
       run: |
-        curl -O https://www.klayout.org/downloads/Ubuntu-18/klayout_0.27.12-1_amd64.deb
+        curl -L -O https://www.klayout.org/downloads/Ubuntu-20/klayout_0.27.12-1_amd64.deb
         sudo dpkg -i klayout_0.27.12-1_amd64.deb
         sudo apt-get -f install
         sudo apt-get install -yq xvfb