diff --git a/.github/workflows/build-reusable.yml b/.github/workflows/build-reusable.yml
index b2ac6d7..6870c9e 100644
--- a/.github/workflows/build-reusable.yml
+++ b/.github/workflows/build-reusable.yml
@@ -197,8 +197,12 @@ jobs:
             # Use system clang for better compatibility
             export CC=clang
             export CXX=clang++
-            # Homebrew libraries on each macOS version require matching minimum version
-            if [[ "${{ matrix.os }}" == macos-14* ]]; then
+            # Set deployment target based on runner
+            # macos-15-large is Intel x86_64, target 13.0 for backward compatibility
+            # macos-14/15 are arm64, target their respective versions
+            if [[ "${{ matrix.os }}" == "macos-15-large" ]]; then
+              export MACOSX_DEPLOYMENT_TARGET=13.0
+            elif [[ "${{ matrix.os }}" == macos-14* ]]; then
               export MACOSX_DEPLOYMENT_TARGET=14.0
             elif [[ "${{ matrix.os }}" == macos-15* ]]; then
               export MACOSX_DEPLOYMENT_TARGET=15.0
@@ -215,8 +219,12 @@ jobs:
             # Use system clang for better compatibility
             export CC=clang
             export CXX=clang++
-            # Homebrew libraries on each macOS version require matching minimum version
-            if [[ "${{ matrix.os }}" == macos-14* ]]; then
+            # Set deployment target based on runner
+            # macos-15-large is Intel x86_64, target 13.3 for backward compatibility (DiskANN needs 13.3+)
+            # macos-14/15 are arm64, target their respective versions
+            if [[ "${{ matrix.os }}" == "macos-15-large" ]]; then
+              export MACOSX_DEPLOYMENT_TARGET=13.3
+            elif [[ "${{ matrix.os }}" == macos-14* ]]; then
               export MACOSX_DEPLOYMENT_TARGET=14.0
             elif [[ "${{ matrix.os }}" == macos-15* ]]; then
               export MACOSX_DEPLOYMENT_TARGET=15.0
@@ -257,8 +265,11 @@ jobs:
         if: runner.os == 'macOS'
         run: |
           # Determine deployment target based on runner OS
-          # Must match the Homebrew libraries for each macOS version
-          if [[ "${{ matrix.os }}" == macos-14* ]]; then
+          # macos-15-large is Intel x86_64, target 13.x for backward compatibility
+          if [[ "${{ matrix.os }}" == "macos-15-large" ]]; then
+            HNSW_TARGET="13.0"
+            DISKANN_TARGET="13.3"
+          elif [[ "${{ matrix.os }}" == macos-14* ]]; then
             HNSW_TARGET="14.0"
             DISKANN_TARGET="14.0"
           elif [[ "${{ matrix.os }}" == macos-15* ]]; then
@@ -319,7 +330,9 @@ jobs:
           PY_TAG=$($UV_PY -c "import sys; print(f'cp{sys.version_info[0]}{sys.version_info[1]}')")
 
           if [[ "$RUNNER_OS" == "macOS" ]]; then
-            if [[ "${{ matrix.os }}" == macos-14* ]]; then
+            if [[ "${{ matrix.os }}" == "macos-15-large" ]]; then
+              export MACOSX_DEPLOYMENT_TARGET=13.3
+            elif [[ "${{ matrix.os }}" == macos-14* ]]; then
               export MACOSX_DEPLOYMENT_TARGET=14.0
             elif [[ "${{ matrix.os }}" == macos-15* ]]; then
               export MACOSX_DEPLOYMENT_TARGET=15.0