diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index cc4cf9d..a7d3db0 100755
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -24,6 +24,10 @@ jobs:
       run: |
         tools/setup_ci.sh ${{ matrix.python-version }}
         pip install -r requirements.txt
+    - name: Test
+      run: |
+        eval "$(conda shell.bash hook)"
+        conda activate python${{ matrix.python-version }}
         rm -f ${CONDA_PREFIX}/lib/libimp_pmi.so* ${CONDA_PREFIX}/lib/_IMP_pmi.so
         # Use same C/C++ compiler as conda
         source ${CONDA_PREFIX}/etc/conda/activate.d/activate-gcc_linux-64.sh