diff --git a/.github/workflows/UnitTests.yml b/.github/workflows/UnitTests.yml
index 28958316f..6695c0fc6 100644
--- a/.github/workflows/UnitTests.yml
+++ b/.github/workflows/UnitTests.yml
@@ -63,26 +63,26 @@ jobs:
         spack_yaml: .ci/mvapich/spack.yaml
         deploy: false
 
-    - name: Set PATH and LD_LIBRARY_PATH
-      run: |
-        echo "PATH=$(realpath .ci/mvapich/.spack-env/view/bin):${PATH}" >> $GITHUB_ENV
-        echo "LD_LIBRARY_PATH=$(realpath .ci/mvapich/.spack-env/view/lin):${LD_LIBRARY_PATH}" >> $GITHUB_ENV
+    # - name: Set PATH and LD_LIBRARY_PATH
+    #   run: |
+    #     echo "PATH=$(realpath .ci/mvapich/.spack-env/view/bin):${PATH}" >> $GITHUB_ENV
+    #     echo "LD_LIBRARY_PATH=$(realpath .ci/mvapich/.spack-env/view/lin):${LD_LIBRARY_PATH}" >> $GITHUB_ENV
 
-    - uses: julia-actions/setup-julia@latest
-      with:
-        version: ${{ matrix.julia_version }}
+    # - uses: julia-actions/setup-julia@latest
+    #   with:
+    #     version: ${{ matrix.julia_version }}
 
-    - uses: julia-actions/cache@v1
-    - name: add MPIPreferences
-      shell: julia --color=yes --project=. {0}
-      run: |
-        using Pkg
-        Pkg.develop(path="lib/MPIPreferences")
+    # - uses: julia-actions/cache@v1
+    # - name: add MPIPreferences
+    #   shell: julia --color=yes --project=. {0}
+    #   run: |
+    #     using Pkg
+    #     Pkg.develop(path="lib/MPIPreferences")
 
-    - name: use system MPI
-      shell: julia --color=yes --project=. {0}
-      run: |
-        using MPIPreferences
-        MPIPreferences.use_system_binary()
+    # - name: use system MPI
+    #   shell: julia --color=yes --project=. {0}
+    #   run: |
+    #     using MPIPreferences
+    #     MPIPreferences.use_system_binary()
 
-    - uses: julia-actions/julia-runtest@latest
+    # - uses: julia-actions/julia-runtest@latest