diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 7e28c4b67d..022684e79a 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -193,14 +193,14 @@ jobs:
         if: always() && (env.JAVA_VERSION == env.PUBLISH_JDK)
         run: >
           find . -path */jacoco/*.exec -o -path */results/*.xml
-          | tar czf ${{ env.ARTIFACT_NAME }}.tar.gz --files-from -
+          | tar c --files-from - | brotli -o ${{ env.ARTIFACT_NAME }}.tar.br
       - name: Upload test results
         uses: actions/upload-artifact@50769540e7f4bd5e21e526ee35c689e35e0d6874 # v4.4.0
         if: always() && (env.JAVA_VERSION == env.PUBLISH_JDK)
         with:
           retention-days: 1
           name: ${{ env.ARTIFACT_NAME }}-results
-          path: ${{ env.ARTIFACT_NAME }}.tar.gz
+          path: ${{ env.ARTIFACT_NAME }}.tar.br
       - name: Cancel if failed
         uses: andymckay/cancel-action@a955d435292c0d409d104b57d8e78435a93a6ef1 # 0.5
         continue-on-error: true
@@ -239,7 +239,9 @@ jobs:
       - name: Download Tests Results
         uses: actions/download-artifact@fa0a91b85d4f404e444e00e005971372dc801d16 # v4.1.8
       - name: Decompress
-        run: find . -type f -name '*.tar.gz' -exec sh -c 'tar -zxf {} --one-top-level' \;
+        run: >
+          find . -type f -name '*.tar.br' -exec sh -c
+          'brotli -d {} && tar -xf ${0%.br} --one-top-level' \;
       - name: Combine Jacoco Reports
         uses: ./.github/actions/run-gradle
         with:
@@ -298,7 +300,9 @@ jobs:
       - name: Download Tests
         uses: actions/download-artifact@fa0a91b85d4f404e444e00e005971372dc801d16 # v4.1.8
       - name: Decompress
-        run: find . -type f -name '*.tar.gz' -exec sh -c 'tar -zxf {} --one-top-level' \;
+        run: >
+          find . -type f -name '*.tar.br' -exec sh -c
+          'brotli -d {} && tar -xf ${0%.br} --one-top-level' \;
       - name: Publish Test Results
         uses: EnricoMi/publish-unit-test-result-action@82082dac68ad6a19d980f8ce817e108b9f496c2a # v2.17.1
         continue-on-error: true