diff --git a/.github/workflows/build-ci.yml b/.github/workflows/build-ci.yml
index c89272ac843..9ee5d53a17a 100644
--- a/.github/workflows/build-ci.yml
+++ b/.github/workflows/build-ci.yml
@@ -102,10 +102,7 @@ jobs:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
   build-gcc:
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [ubuntu-20.04]
+    runs-on: ubuntu-20.04
 
     steps:
     # Checkout the repository as $GITHUB_WORKSPACE
@@ -143,10 +140,7 @@ jobs:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
   build-clang:
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [ubuntu-20.04]
+    runs-on: ubuntu-20.04
 
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps: