diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 1a350c1..ca2bd61 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -70,7 +70,7 @@ jobs:
           python-version: ${{ matrix.python-version }}
       - name: Install LAMMPS
         run: |
-          conda install "lammps=${{ matrix.lammps-version }}"
+          conda install "lammps=${{ matrix.lammps-version }}" pip
       - name: Install
         run: |
           python -m pip install pip --upgrade pip