diff --git a/config.sh b/config.sh
index 97351f6e0..71017f664 100644
--- a/config.sh
+++ b/config.sh
@@ -18,15 +18,6 @@ LIBWEBP_VERSION=1.2.0
 BZIP2_VERSION=1.0.8
 LIBXCB_VERSION=1.14
 
-function pyinst_fname_for_version {
-    local inst_ext=$(pyinst_ext_for_version $1)
-    if [ "${PLAT:-}" == "arm64" ]; then
-        echo "python-$1-macos11.${inst_ext}"
-    else
-        echo "python-$1-macosx$2.${inst_ext}"
-    fi
-}
-
 function pre_build {
     # Any stuff that you need to do before you start building the wheels
     # Runs in the root directory of this repository.
diff --git a/multibuild b/multibuild
index a980404f7..84c6f7f6c 160000
--- a/multibuild
+++ b/multibuild
@@ -1 +1 @@
-Subproject commit a980404f76f9491828391a79b1e37bf561988467
+Subproject commit 84c6f7f6c2b56d88197cd9d1fe928326d9c734c3