diff --git a/.github/workflows/7-Zip-zstd.yml b/.github/workflows/7-Zip-zstd.yml
index 60ed10dec..b5fae42d1 100644
--- a/.github/workflows/7-Zip-zstd.yml
+++ b/.github/workflows/7-Zip-zstd.yml
@@ -9,7 +9,6 @@ jobs:
     with:
       workflow: ${{ github.workflow }}
       toolset: musl
-      version: 12.04.5
 
   windows-mingw:
     if: ${{ vars.CURRENT_TOOL == github.workflow }}
diff --git a/7-Zip-zstd/build_musl.sh b/7-Zip-zstd/build_musl.sh
index f005bedb5..e49cb0dd9 100755
--- a/7-Zip-zstd/build_musl.sh
+++ b/7-Zip-zstd/build_musl.sh
@@ -5,7 +5,12 @@ set -e
 echo "::group::install deps"
 
 apt update
-apt install -y build-essential wget
+apt install -y software-properties-common build-essential wget
+
+add-apt-repository ppa:ubuntu-toolchain-r/test
+apt-get update
+apt-get install gcc-4.8
+update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.8 50
 
 echo "::endgroup::"