diff --git a/.github/workflows/RonaLisa.yml b/.github/workflows/RonaLisa.yml
index 18c9712..e7f9987 100644
--- a/.github/workflows/RonaLisa.yml
+++ b/.github/workflows/RonaLisa.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [macos-latest, windows-latest, ubuntu-18.04]
+        os: [macos-latest, windows-latest, ubuntu-latest]
     steps:
       - uses: actions/checkout@v2
       - name: building..
@@ -23,7 +23,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [macos-latest, windows-latest, ubuntu-18.04]
+        os: [ubuntu-latest]
     steps:
       - uses: docker://debian/testing:latest
       - uses: actions/checkout@v2