diff --git a/.github/workflows/ubuntu.yml b/.github/workflows/ubuntu.yml
index 89ec6f8..2bca821 100644
--- a/.github/workflows/ubuntu.yml
+++ b/.github/workflows/ubuntu.yml
@@ -17,7 +17,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-16.04,ubuntu-18.04]
+        os: [ubuntu-18.04]
         qt-ver: [5.15.1]
         qt-arch-install: [gcc_64]
         gcc-arch: [x64]