diff --git a/.github/workflows/conda_pip.yml b/.github/workflows/conda_pip.yml
index c6bd37cd..b8180665 100644
--- a/.github/workflows/conda_pip.yml
+++ b/.github/workflows/conda_pip.yml
@@ -181,6 +181,7 @@ jobs:
           python -mpip install -U pip
           python -mpip install -r "${REQUIREMENTS_CI}"
           python -mpip install ./
+          python -mpip install mpi4py
 
       - name: "Run tests: Basic"
         run: |
diff --git a/pyproject.toml b/pyproject.toml
index 948c51a6..469ab84c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -45,7 +45,6 @@ gmsh = "*"
 jinja2 = "*"
 joblib = "*"
 llvmlite = "*"
-mpi4py = "*"
 netCDF4 = "*"
 numpy = ">=1.20, <2.0"
 pandas = "*"