diff --git a/.github/workflows/build-linux.yml b/.github/workflows/build-linux.yml
index e687dd8a5a..d928449f7e 100644
--- a/.github/workflows/build-linux.yml
+++ b/.github/workflows/build-linux.yml
@@ -49,7 +49,7 @@ jobs:
     - name: Extract source package
       run: |
         mkdir src
-        tar -xf xemu-*.tar.gz -C src --strip-components=2
+        tar -xf xemu-*.tar.zst -C src --strip-components=2
     - name: Create debian changelog
       run: |
         pushd src
diff --git a/.github/workflows/build-macos.yml b/.github/workflows/build-macos.yml
index 12a1f5d932..d2033e5aa4 100644
--- a/.github/workflows/build-macos.yml
+++ b/.github/workflows/build-macos.yml
@@ -37,7 +37,7 @@ jobs:
       with:
         name: src
     - name: Extract source package
-      run: tar -xf xemu-*.tar.gz --strip-components=2
+      run: tar -xf xemu-*.tar.zst --strip-components=2
     - uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548 # v6.1.0
       with:
         python-version: '3.12'
diff --git a/.github/workflows/build-windows.yml b/.github/workflows/build-windows.yml
index fc50655fea..4fd6b7c0c1 100644
--- a/.github/workflows/build-windows.yml
+++ b/.github/workflows/build-windows.yml
@@ -34,7 +34,7 @@ jobs:
       with:
         name: src
     - name: Extract source package
-      run: tar -xf xemu-*.tar.gz --strip-components=2
+      run: tar -xf xemu-*.tar.zst --strip-components=2
     - name: Initialize compiler cache
       id: cache
       uses: actions/cache@9255dc7a253b0ccc959486e2bca901246202afeb # v4
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index f0c2117eb8..2c5b7b20c2 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -31,12 +31,11 @@ jobs:
       run: |
         pkg_name="xemu-${{ steps.version.outputs.pkg_version }}"
         tar_filename="${pkg_name}.tar"
-        echo "pkg_filename=${tar_filename}.gz" >> $GITHUB_OUTPUT
-
         tar_prefix="./${pkg_name}/"
         ./scripts/archive-source.sh ${tar_filename} ${tar_prefix}
         tar -r --file "${tar_filename}" --transform "s,^./,${tar_prefix}," ./XEMU_COMMIT ./XEMU_VERSION
-        gzip -1 "${tar_filename}"
+        zstd "${tar_filename}"
+        echo "pkg_filename=${tar_filename}.zst" >> $GITHUB_OUTPUT
     - name: Upload source package artifact
       uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v4
       with:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index c6e64bd39b..ee92d01d6e 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -36,7 +36,7 @@ jobs:
         tag_name: ${{ inputs.tag }}
         draft: true
         files: |
-          dist/xemu*.tar.gz
+          dist/xemu*.tar.zst
           dist/xemu*-win-*.zip
           dist/xemu*-macos-universal*.zip
           dist/xemu*.AppImage
diff --git a/.github/workflows/update-ppa.yml b/.github/workflows/update-ppa.yml
index 1bf41da47c..a17f311c9d 100644
--- a/.github/workflows/update-ppa.yml
+++ b/.github/workflows/update-ppa.yml
@@ -21,11 +21,11 @@ jobs:
     - name: Download release source
       env:
         GH_TOKEN: ${{ github.token }}
-      run: gh release download "${{ inputs.release }}" --repo="${GITHUB_REPOSITORY}" -p 'xemu-*.tar.gz'
+      run: gh release download "${{ inputs.release }}" --repo="${GITHUB_REPOSITORY}" -p 'xemu-*.tar.zst'
     - name: Extract source package
       run: |
         mkdir src
-        tar -C src -xf xemu-*.tar.gz --strip-components=2
+        tar -C src -xf xemu-*.tar.zst --strip-components=2
 
         # Ensure subprojects are uploaded
         find src/subprojects -name "*.gitignore" -exec rm {} \;