diff --git a/.github/actions/set-matrix-output/action.yml b/.github/actions/set-matrix-output/action.yml
index 9024ee0cd..ca85195b0 100644
--- a/.github/actions/set-matrix-output/action.yml
+++ b/.github/actions/set-matrix-output/action.yml
@@ -1,7 +1,7 @@
 name: 'Set matrix output'
 description: 'Use artifacts as a workaround for matrix outputs not being supported'
 inputs:
-  file-name:
+  artifact-name:
     required: true
   test-outcome:
     required: true
@@ -10,11 +10,11 @@ runs:
   using: "composite"
   steps:
   - name: Save output file
-    run: echo ${{ inputs.test-outcome }} > ${{ inputs.file-name }}
+    run: echo ${{ inputs.test-outcome }} > ${{ inputs.artifact-name }}.txt
     shell: bash
 
   - name: Upload output file
     uses: actions/upload-artifact@v3
     with:
-      name: ${{ inputs.file-name }}
-      path: ${{ inputs.file-name }}
+      name: ${{ inputs.artifact-name }}
+      path: ${{ inputs.artifact-name }}.txt
diff --git a/.github/workflows/stage-tests.yml b/.github/workflows/stage-tests.yml
index 7f8916222..610f4cef1 100644
--- a/.github/workflows/stage-tests.yml
+++ b/.github/workflows/stage-tests.yml
@@ -113,7 +113,7 @@ jobs:
       if: ${{ inputs.commit_sha != '' && !cancelled() }}
       uses: ./.github/actions/set-matrix-output
       with:
-        file-name: sdist.${{ matrix.distros[1] }}.txt
+        artifact-name: sdist.${{ matrix.distros[1] }}
         test-outcome: ${{ steps.test.outcome }}
 
 # We also run some wheel (QE test category 2) tests
@@ -189,7 +189,7 @@ jobs:
       if: ${{ inputs.commit_sha != '' && !cancelled() }}
       uses: ./.github/actions/set-matrix-output
       with:
-        file-name: ${{ matrix.python-version[1] }}-manylinux_${{ matrix.platform[0] }}.${{ matrix.distros[1] }}.txt
+        artifact-name: ${{ matrix.python-version[1] }}-manylinux_${{ matrix.platform[0] }}.${{ matrix.distros[1] }}
         test-outcome: ${{ steps.test.outcome }}
 
   manylinux_debian:
@@ -258,7 +258,7 @@ jobs:
       if: ${{ inputs.commit_sha != '' && !cancelled() }}
       uses: ./.github/actions/set-matrix-output
       with:
-        file-name: ${{ matrix.python-version[1] }}-manylinux_${{ matrix.platform[0] }}.${{ matrix.debian-name }}.txt
+        artifact-name: ${{ matrix.python-version[1] }}-manylinux_${{ matrix.platform[0] }}.${{ matrix.debian-name }}
         test-outcome: ${{ steps.test.outcome }}
 
   manylinux_ubuntu2204:
@@ -322,7 +322,7 @@ jobs:
       if: ${{ inputs.commit_sha != '' && !cancelled() }}
       uses: ./.github/actions/set-matrix-output
       with:
-        file-name: cp310-manylinux_${{ matrix.platform[0] }}.ubuntu2204.txt
+        artifact-name: cp310-manylinux_${{ matrix.platform[0] }}.ubuntu2204
         test-outcome: ${{ steps.test.outcome }}
 
   macOS:
@@ -387,5 +387,5 @@ jobs:
       if: ${{ inputs.commit_sha != '' && !cancelled() }}
       uses: ./.github/actions/set-matrix-output
       with:
-        file-name: ${{ matrix.python-version[1] }}-macosx_x86_64.${{ matrix.macos-version }}.txt
+        artifact-name: ${{ matrix.python-version[1] }}-macosx_x86_64.${{ matrix.macos-version }}
         test-outcome: ${{ steps.test.outcome }}