diff --git a/.github/workflows/straight.yml b/.github/workflows/straight.yml
index a0d4d576e..09811e1bf 100644
--- a/.github/workflows/straight.yml
+++ b/.github/workflows/straight.yml
@@ -1,5 +1,7 @@
 name: straight (Pyomo released)
 
+# april 2023: matched the testaph.yml dependencies
+
 on:
   push:
     branches: [ main ]
@@ -18,7 +20,6 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - uses: conda-incubator/setup-miniconda@v2
-      - uses: mpi4py/setup-mpi@v1
         with:
           activate-environment: test_env
           python-version: 3.8
@@ -26,8 +27,7 @@ jobs:
       - name: Install dependencies
         run: |
           conda install mpi4py pandas setuptools
-          pip install pyomo pandas sphinx sphinx_rtd_theme cplex
-          pip install xpress numpy scipy dill
+          pip install pyomo xpress cplex dill
 
       - name: setup the program
         run: |