diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 23d3af1..6a8c600 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -31,6 +31,7 @@ jobs:
         if test "${{ matrix.python-version }}" = "2.7" ; then PY2=on; else PY2=off; fi
         cmake .. -DIMP_DIR=${CONDA_PREFIX}/lib/cmake/IMP -DUSE_PYTHON2=${PY2}
         make
+        pip install requirements.txt
         ./setup_environment.sh pytest --cov=.. --cov-branch --cov-report=xml -v ../test/test_*.py 
         flake8 ../pyext/src/ ../test/
     - uses: codecov/codecov-action@v1
\ No newline at end of file