diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 31e0f38..21993ca 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -19,7 +19,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: ["ubuntu-latest", "ubuntu-23.04", "ubuntu-22.04", "ubuntu-20.04", "ubuntu-18.04.6"]
+        os: ["ubuntu-latest"]
         python-version: ["3.7","3.8","3.9","3.10","3.11"]
 
     steps: