diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 26c52939..55a0c5ec 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -25,7 +25,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: ['ubuntu-18.04', 'ubuntu-16.04']
+        os: ['ubuntu-18.04']
         perl: [ '5.32', '5.30' ]
     name: Perl ${{ matrix.perl }} on ${{ matrix.os }}
     steps: