diff --git a/.github/workflows/build_mpich_source.yml b/.github/workflows/build_mpich_source.yml
index 69acbd8f597..422bd43502f 100644
--- a/.github/workflows/build_mpich_source.yml
+++ b/.github/workflows/build_mpich_source.yml
@@ -85,7 +85,7 @@ jobs:
           make install
 
       - name: Tar MPICH installation to preserve permissions for artifact
-        run: tar -cvf mpich.tar ${{ runner.workspace }}/mpich
+        run: tar -cvf mpich.tar -C ${{ runner.workspace }} mpich
 
       - name: Save MPICH installation artifact
         uses: actions/upload-artifact@v4
diff --git a/.github/workflows/build_openmpi_source.yml b/.github/workflows/build_openmpi_source.yml
index 94a2540dce8..0e144a0f300 100644
--- a/.github/workflows/build_openmpi_source.yml
+++ b/.github/workflows/build_openmpi_source.yml
@@ -78,7 +78,7 @@ jobs:
           make install
 
       - name: Tar OpenMPI installation to preserve permissions for artifact
-        run: tar -cvf openmpi.tar ${{ runner.workspace }}/openmpi
+        run: tar -cvf openmpi.tar -C ${{ runner.workspace }} openmpi
 
       - name: Save OpenMPI installation artifact
         uses: actions/upload-artifact@v4