diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index a6f4dd0..19ebf04 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -34,6 +34,11 @@ jobs:
         run: python3 -m pip install -r requirements_dev.txt
       - name: Install postgresql
         run: sudo apt-get install postgresql
+      - name: Install pg_tmp
+        run: |
+          sudo apt-get install build-essential
+          git clone https://github.com/eradman/ephemeralpg.git
+          cd ephemeralpg && make && make install
       - name: Test
         run: ./scripts/test
       - uses: codecov/codecov-action@v1