diff --git a/.github/ci/universal_matrix.json b/.github/ci/universal_matrix.json
index 64b7d7608..be46efc75 100644
--- a/.github/ci/universal_matrix.json
+++ b/.github/ci/universal_matrix.json
@@ -4,7 +4,7 @@
       "name": "Ubuntu 22.04 GCC Universal",
       "os": "ubuntu-22.04",
       "simple_name": "ubuntu",
-      "archive_ext": "tar"
+      "archive_ext": "tar.gz"
     },
     {
       "name": "Windows 2022 Mingw-w64 GCC Universal",
diff --git a/.github/workflows/upload_binaries.yml b/.github/workflows/upload_binaries.yml
index d91f75ecd..68315c7c4 100644
--- a/.github/workflows/upload_binaries.yml
+++ b/.github/workflows/upload_binaries.yml
@@ -59,13 +59,13 @@ jobs:
           cp CONTRIBUTING.md ../stockfish/
 
       - name: Create tar
-        if: ${{ !startsWith(matrix.config.os, 'windows') }}
+        if: ${{ startsWith(matrix.config.archive_ext, 'tar') }}
         run: |
           chmod +x ./stockfish/stockfish-$NAME-$BINARY$EXT
-          tar -cvf stockfish-$NAME-$BINARY.tar stockfish
+          tar -cavf stockfish-$NAME-$BINARY."${{ matrix.config.archive_ext }}" stockfish
 
       - name: Create zip
-        if: ${{ startsWith(matrix.config.os, 'windows') }}
+        if: ${{ matrix.config.archive_ext == 'zip' }}
         run: |
           zip -r stockfish-$NAME-$BINARY.zip stockfish