diff --git a/.github/workflows/build-test.yml b/.github/workflows/build-test.yml
index c4aeccf..7b8e8ee 100644
--- a/.github/workflows/build-test.yml
+++ b/.github/workflows/build-test.yml
@@ -62,7 +62,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ ubuntu-18.04, ubuntu-20.04, ubuntu-22.04, macos-11, macos-12, windows-2019, windows-2022 ]
+        os: [ ubuntu-20.04, ubuntu-22.04, macos-11, macos-12, windows-2019, windows-2022 ]
 
     steps:
       - uses: actions/checkout@v3