diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 46752f44c..2ef21b11c 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -37,7 +37,8 @@ jobs:
         compiler:
           - { cc: clang, cxx: clang++ }
           - { cc: gcc,   cxx: g++     }
-        m32: [0, 1]
+        # m32 1 is deprecated, not here to speed up regressions
+        m32: [0]
         exclude:
           # Build pull requests only with ubuntu-22.04 and without m32
           # - os:  ${{ github.event_name == 'pull_request' && 'ubuntu-18.04' || 'do-not-exclude' }}