diff --git a/.github/workflows/posix.yml b/.github/workflows/posix.yml
index 93567d2..e567c27 100644
--- a/.github/workflows/posix.yml
+++ b/.github/workflows/posix.yml
@@ -23,16 +23,16 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, macos-13]
+        os: [ubuntu-latest, macos-latest]
         PLAT: [i686, x86_64]
         INTERFACE64: ['0', '1']
         MB_ML_VER: ['2014']
         MB_ML_LIBC: ['manylinux']
         include:
-          - os: macos-13
+          - os: macos-latest
             PLAT: arm64
             INTERFACE64: '1'
-          - os: macos-13
+          - os: macos-latest
             PLAT: arm64
             INTERFACE64: '0'
           - os: ubuntu-latest
@@ -67,7 +67,7 @@ jobs:
 
         exclude:
           - PLAT: i686
-            os: macos-13
+            os: macos-latest
           - PLAT: i686
             INTERFACE64: '1'
     env:
@@ -94,9 +94,9 @@ jobs:
         echo "DOCKER_TEST_IMAGE=$(echo multibuild/xenial_${{ matrix.PLAT}})" >> $GITHUB_ENV;
 
     - uses: maxim-lobanov/setup-xcode@v1.6.0
-      if: ${{ matrix.os == 'macos-13' }}
+      if: ${{ matrix.os == 'macos-latest' }}
       with:
-        xcode-version: '14.3'
+        xcode-version: '15.4'
 
     - name: Print some Environment variable
       run: |
@@ -137,7 +137,7 @@ jobs:
           version=$(cd OpenBLAS && git describe --tags --abbrev=8 | sed -e "s/^v\(.*\)-g.*/\1/" | sed -e "s/-/./g")
           sed -e "s/^version = .*/version = \"${version}\"/" -i.bak pyproject.toml
         fi
-        if [ "macos-13" == "${{ matrix.os }}" ]; then
+        if [ "macos-latest" == "${{ matrix.os }}" ]; then
           source tools/build_wheel.sh
         else
           libc=${MB_ML_LIBC:-manylinux}
diff --git a/gfortran-install b/gfortran-install
index 47bb0df..3dd38d9 160000
--- a/gfortran-install
+++ b/gfortran-install
@@ -1 +1 @@
-Subproject commit 47bb0df1e6f766503f81e4fd3d5d2acadd887393
+Subproject commit 3dd38d9ce78b3890598cb0eff18a7bec50c06f5e
diff --git a/multibuild b/multibuild
index 452dd2d..24f1446 160000
--- a/multibuild
+++ b/multibuild
@@ -1 +1 @@
-Subproject commit 452dd2d1705f6b2375369a6570c415beb3163f70
+Subproject commit 24f1446f6477893b2ef9d721aabcee7a494ca2b1
diff --git a/pyproject.toml b/pyproject.toml
index 842951f..90bc7f9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -9,7 +9,7 @@ build-backend = "setuptools.build_meta"
 [project]
 name = "scipy-openblas64"
 # v0.3.30
-version = "0.3.30.0.1"
+version = "0.3.30.0.2"
 requires-python = ">=3.7"
 description = "Provides OpenBLAS for python packaging"
 readme = "README.md"
diff --git a/tools/build_steps.sh b/tools/build_steps.sh
index 5d8a14f..33497d3 100644
--- a/tools/build_steps.sh
+++ b/tools/build_steps.sh
@@ -1,17 +1,17 @@
 # Build script for manylinux and OSX
 BUILD_PREFIX=/usr/local
-# OSX gfortran archive
-GFORTRAN_DMG="archives/gfortran-4.9.0-Mavericks.dmg"
 
 ROOT_DIR=$(dirname $(dirname "${BASH_SOURCE[0]}"))
 source ${ROOT_DIR}/multibuild/common_utils.sh
-source ${ROOT_DIR}/gfortran-install/gfortran_utils.sh
 
 MB_PYTHON_VERSION=3.9
 
 function before_build {
     # Manylinux Python version set in build_lib
     if [ -n "$IS_OSX" ]; then
+        sudo mkdir -p /usr/local/lib
+        sudo chmod 777 /usr/local/lib
+        touch /usr/local/lib/.dir_exists
         source ${ROOT_DIR}/multibuild/osx_utils.sh
         get_macpython_environment ${MB_PYTHON_VERSION} venv
         source ${ROOT_DIR}/gfortran-install/gfortran_utils.sh
@@ -89,7 +89,6 @@ function build_lib {
     #
     # Depends on globals
     #     BUILD_PREFIX - install suffix e.g. "/usr/local"
-    #     GFORTRAN_DMG
     #     MB_ML_VER
     set -x
     local plat=${1:-$PLAT}
@@ -99,7 +98,7 @@ function build_lib {
     # Make directory to store built archive
     if [ -n "$IS_OSX" ]; then
         # Do build, add gfortran hash to end of name
-        wrap_wheel_builder do_build_lib "$plat" "gf_${GFORTRAN_SHA:0:7}" "$interface64" "$nightly"
+        do_build_lib "$plat" "gf_${GFORTRAN_SHA:0:7}" "$interface64" "$nightly"
         return
     fi
     # Manylinux wrapper
@@ -155,6 +154,7 @@ function do_build_lib {
             local target="CORE2"
             # Pick up the gfortran runtime libraries
             export DYLD_LIBRARY_PATH=/usr/local/lib:$DYLD_LIBRARY_PATH
+            CFLAGS="$CFLAGS -arch x86_64"
             ;;
         *-i686)
             local bitness=32
@@ -168,7 +168,8 @@ function do_build_lib {
         Darwin-arm64)
             local bitness=64
             local target="VORTEX"
-            CFLAGS="$CFLAGS -ftrapping-math"
+            CFLAGS="$CFLAGS -ftrapping-math -mmacosx-version-min=11.0"
+            MACOSX_DEPLOYMENT_TARGET="11.0"
             ;;
         *-s390x)
             local bitness=64