diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 286d1d651..706629ce2 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -42,7 +42,7 @@ jobs:
           # Build -m32 only on ubuntu-22.04 clang++
           - {os: ubuntu-18.04, m32: 1}
           - {os: ubuntu-20.04, m32: 1}
-          - { cc: gcc, cxx: g++ }
+          - compiler: { cc: gcc, cxx: g++ }
             m32: 1
         include:
           # Build GCC 10 on ubuntu-20.04