diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 3657439f..12fa5057 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -61,9 +61,7 @@ jobs:
     needs: ["create-release"]
     runs-on: ${{ matrix.os }}
     env:
-      # When CARGO is set to CROSS, TARGET_DIR includes matrix.target.
       TARGET_DIR: ./target
-      # Emit backtraces on panics.
       RUST_BACKTRACE: 1
       MACOSX_DEPLOYMENT_TARGET: 10.9
 
@@ -81,13 +79,13 @@ jobs:
             os: ubuntu-20.04
             target: x86_64-unknown-linux-musl
           - build: macos-aarch64
-            os: macos-14 # macOS 14 is M1 runner
+            os: macos-14
             target: aarch64-apple-darwin
           - build: macos-x86
             os: macos-13 
             target: x86_64-apple-darwin
           - build: windows
-            os: "windows-2019"
+            os: windows-2019
             target: x86_64-pc-windows-msvc
 
     steps:
@@ -101,34 +99,31 @@ jobs:
         shell: bash
         run: |
           echo "MANUAL=1" >> $GITHUB_ENV
-
-      - name: Install Rust (Non-windows)
-        if: matrix.build != 'windows'
-        uses: dtolnay/rust-toolchain@stable
+  
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@master
         with:
+          toolchain: 1.80.0
           targets: ${{ matrix.target }}
           components: llvm-tools
 
-      - name: Install Rust (Windows)
-        if: matrix.build == 'windows'
-        uses: dtolnay/rust-toolchain@stable
-        with:
-          targets: ${{ matrix.target }}
-        
-      - name: Install Xcode
-        if: matrix.build == 'macos-x86' || matrix.build == 'macos-aarch64'
-        uses: maxim-lobanov/setup-xcode@v1
-        with:
-          xcode-version: latest-stable
-
-      - name: Export Rust Environment Variables
-        if: matrix.build != 'windows'
+      - name: Setup Rust environment
         run: |
           echo "RUSTUP_HOME=$HOME/.rustup" >> $GITHUB_ENV
           echo "CARGO_HOME=$HOME/.cargo" >> $GITHUB_ENV
           LLVM_TOOLS_PATH=$(rustc --print sysroot)/lib/rustlib/${{ matrix.target }}/bin
           echo "PATH=$LLVM_TOOLS_PATH:$HOME/.cargo/bin:$PATH" >> $GITHUB_ENV
 
+      - name: Install LLVM and Clang
+        uses: KyleMayes/install-llvm-action@v1
+        with:
+          version: "18.0"
+
+      - name: Set up LLVM environment
+        run: |
+          echo "LLVM_PATH=${{ env.LLVM_PATH }}" >> $GITHUB_ENV
+          echo "${{ env.LLVM_PATH }}/bin" >> $GITHUB_PATH
+
       - name: Install Cross toolchain (zig)
         if: matrix.build == 'macos-aarch64' || matrix.build == 'linux-aarch64'
         uses: goto-bus-stop/setup-zig@v2
@@ -157,28 +152,19 @@ jobs:
         if: matrix.build == 'linux'
         shell: bash
         run: |
-          export TOOLCHAIN=stable-x86_64-unknown-linux-gnu
-          export TARGET=x86_64-unknown-linux-gnu
+          export TARGET=${{ matrix.target }}
           ./build_pgo.sh
         env:
           HOME: ${{ github.workspace }}
 
       - name: Build PGO Binary (macOS)
-        if: matrix.build == 'macos-x86'
+        if: matrix.build == 'macos-x86' || matrix.build == 'macos-aarch64'
         run: |
-          export TOOLCHAIN=stable-x86_64-apple-darwin
-          export TARGET=x86_64-apple-darwin
+          export TARGET=${{ matrix.target }}
           ./build_pgo.sh
         env:
           HOME: ${{ github.workspace }}
       
-      - name: Build PGO binary (macOS AARCH64)
-        if: matrix.build == 'macos-aarch64'
-        run: |
-          export TOOLCHAIN=stable-aarch64-apple-darwin
-          export TARGET=aarch64-apple-darwin
-          ./build_pgo.sh
-
       - name: Build release binary (linux MUSL)
         if: matrix.build == 'linux-static' 
         run: cargo build --target ${{ matrix.target }} --release
diff --git a/build_pgo.sh b/build_pgo.sh
index 7608490b..390d9379 100755
--- a/build_pgo.sh
+++ b/build_pgo.sh
@@ -1,29 +1,30 @@
-echo "Building binary for instrumented run"
+#!/bin/bash
+set -e
 
-# define toolchain variable
-if [ -n "$TOOLCHAIN" ]; then
-    TOOLCHAIN=$TOOLCHAIN
-elif [ "$(uname)" == "Darwin" ]; then
-    TOOLCHAIN="stable-aarch64-apple-darwin"
-else
-    TOOLCHAIN="stable-x86_64-unknown-linux-gnu"
-fi
+# Function to determine the default target
+get_default_target() {
+    case "$(uname -sm)" in
+        "Darwin x86_64") echo "x86_64-apple-darwin" ;;
+        "Darwin arm64") echo "aarch64-apple-darwin" ;;
+        "Linux x86_64") echo "x86_64-unknown-linux-gnu" ;;
+        "Linux aarch64") echo "aarch64-unknown-linux-gnu" ;;
+        *) echo "unknown" ;;
+    esac
+}
+
+# Use the provided TARGET or default to the current machine's target
+TARGET=${TARGET:-$(get_default_target)}
 
-if [ -n "$TARGET" ]; then
-    TARGET=$TARGET
-elif [ "$(uname)" == "Darwin" ]; then
-    TARGET="aarch64-apple-darwin"
-else
-    TARGET="x86_64-unknown-linux-gnu"
+if [ "$TARGET" = "unknown" ]; then
+    echo "Error: Unable to determine default target. Please specify TARGET explicitly."
+    exit 1
 fi
 
-echo "Cleaning up old build artifacts"
-cargo clean
-rm -rf /tmp/pgo-data
+echo "Using target: $TARGET"
 
-PATH=$HOME/.rustup/toolchains/$TOOLCHAIN/lib/rustlib/$TARGET/bin:$PATH
+echo "Building binary for instrumented run"
 RUSTFLAGS="-Cprofile-generate=/tmp/pgo-data" \
-    cargo +stable build --release --target $TARGET --features fast-alloc
+    cargo build --release --target $TARGET --features fast-alloc
 
 echo "Running instrumented binary"
 for i in $(find samples -name "*.evtx"); do
@@ -34,12 +35,8 @@ for i in $(find samples -name "*.evtx"); do
 done
 
 echo "Merging profile data"
-if [[ "$OSTYPE" == "darwin"* ]]; then
-    /usr/bin/xcrun llvm-profdata merge -o /tmp/pgo-data/merged.profdata /tmp/pgo-data
-else
-    llvm-profdata merge -o /tmp/pgo-data/merged.profdata /tmp/pgo-data
-fi
+llvm-profdata merge -o /tmp/pgo-data/merged.profdata /tmp/pgo-data
 
 echo "Building binary with profile data"
 RUSTFLAGS="-Cprofile-use=/tmp/pgo-data/merged.profdata" \
-    cargo +stable build --release --target $TARGET --features fast-alloc
+    cargo build --release --target $TARGET --features fast-alloc
\ No newline at end of file