diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 568a0a1c8cae502493f3f2992d9c5153a5209e56..48ec5b71f0bcb3935f78662b4ea89896e479e482 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -75,4 +75,29 @@ jobs:
                 build_py_project_in_conda_env
                 run_examples
 
+
+    downstream_tests:
+        strategy:
+            matrix:
+                downstream_project: [pytential]
+        name: Tests for downstream project ${{ matrix.downstream_project }}
+        runs-on: ubuntu-latest
+        steps:
+        -   uses: actions/checkout@v2
+        -   name: "Main Script"
+            env:
+                DOWNSTREAM_PROJECT: ${{ matrix.downstream_project }}
+            run: |
+                git clone "https://github.com/inducer/$DOWNSTREAM_PROJECT.git"
+                cd "$DOWNSTREAM_PROJECT"
+                echo "*** $DOWNSTREAM_PROJECT version: $(git rev-parse --short HEAD)"
+                sed -i "/egg=sumpy/ c git+file://$(readlink -f ..)#egg=sumpy" requirements.txt
+                export CONDA_ENVIRONMENT=.test-conda-env-py3.yml
+                # Avoid slow or complicated tests in downstream projects
+                export PYTEST_ADDOPTS="-k 'not (slowtest or octave or mpi)'"
+                curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/ci-support.sh
+                . ./ci-support.sh
+                build_py_project_in_conda_env
+                test_py_project
+
 # vim: sw=4
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 1bfb6726ca6f4b7e9c8f07af13ec80283a4e5b8d..5e8b886af34ad10803d9cdf6b7d730400692595d 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -33,7 +33,7 @@ Pytest POCL:
     reports:
       junit: test/pytest.xml
 
-Pytest Titan X:
+Pytest Titan V:
   script:
   - py_version=3
   - export PYOPENCL_TEST=nvi:titan
@@ -42,7 +42,7 @@ Pytest Titan X:
   - ". ./build-and-test-py-project.sh"
   tags:
   - python3
-  - nvidia-titan-x
+  - nvidia-titan-v
   except:
   - tags
   allow_failure: True
@@ -67,7 +67,7 @@ Pytest Conda:
     reports:
       junit: test/pytest.xml
 
-Pytest POCL Titan X:
+Pytest POCL Titan V:
   script:
   # Disable caching to ensure SymEngine code generation is exercised.
   - export SUMPY_NO_CACHE=1
@@ -77,7 +77,7 @@ Pytest POCL Titan X:
   - curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/build-and-test-py-project-within-miniconda.sh
   - ". ./build-and-test-py-project-within-miniconda.sh"
   tags:
-  - nvidia-titan-x
+  - nvidia-titan-v
   except:
   - tags
   artifacts: