diff --git a/.github/workflows/pull_request.yml b/.github/workflows/pull_request.yml
index 7a5802b..4a57a82 100644
--- a/.github/workflows/pull_request.yml
+++ b/.github/workflows/pull_request.yml
@@ -12,7 +12,7 @@ jobs:
   build:
     strategy:
       matrix:
-        os: [ debian-9, windows-latest, macos-latest ]
+        os: [ ubuntu-20.04, windows-latest, macos-latest ]
 
     runs-on: ${{ matrix.os }}
 
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index c12055e..36e5935 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -69,8 +69,8 @@ jobs:
           - { target: aarch64-apple-darwin     , os: macos-latest  ,                  jreleaser_platform: osx-aarch_64   }
           - { target: x86_64-apple-darwin      , os: macos-latest  ,                  jreleaser_platform: osx-x86_64     }
           - { target: x86_64-pc-windows-msvc   , os: windows-latest,                  jreleaser_platform: windows-x86_64 }
-          - { target: x86_64-unknown-linux-gnu , os: debian-9      ,                  jreleaser_platform: linux-x86_64   }
-          - { target: aarch64-unknown-linux-gnu, os: debian-9  , use-cross: true, jreleaser_platform: linux-aarch_64 }
+          - { target: x86_64-unknown-linux-gnu , os: ubuntu-20.04      ,                  jreleaser_platform: linux-x86_64   }
+          - { target: aarch64-unknown-linux-gnu, os: ubuntu-20.04  , use-cross: true, jreleaser_platform: linux-aarch_64 }
     runs-on: ${{ matrix.job.os }}
     steps:
       - name: Checkout