diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index acf30ea..e16f899 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -13,8 +13,12 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        python-version: ["2.7", "3.12"]
+        python-version: ["3.12"]
         imp-branch: [main, develop]
+        include:
+        - os: [ubuntu-latest]
+          python-version: "2.7"
+          imp-branch: main
     runs-on: ${{ matrix.os }}
 
     steps: