diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 05c0d67..31b190c 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -19,7 +19,7 @@ jobs:
       contents: read
       pull-requests: write
     env:
-      RUSTFLAGS: -Dwarnings -Ctarget-feature=+simd128,+bulk-memory,+mutable-globals
+      RUSTFLAGS: -Dwarnings -Cpanic=unwind -Cllvm-args=-wasm-use-legacy-eh=false -Ctarget-feature=+simd128,+bulk-memory,+mutable-globals
     steps:
       - uses: actions/checkout@v6
 
@@ -35,10 +35,10 @@ jobs:
 
       - uses: supplypike/setup-bin@v5
         with:
-          uri: "https://github.com/WebAssembly/binaryen/releases/download/version_126/binaryen-version_126-aarch64-linux.tar.gz"
+          uri: "https://github.com/WebAssembly/binaryen/releases/download/version_129/binaryen-version_129-aarch64-linux.tar.gz"
           name: "wasm-opt"
-          version: "126"
-          subPath: "binaryen-version_126/bin"
+          version: "129"
+          subPath: "binaryen-version_129/bin"
 
       - uses: taiki-e/install-action@v2
         with:
@@ -69,9 +69,9 @@ jobs:
         run: pnpm install
 
       - run: |
-          cargo +nightly build --release --target wasm32-unknown-unknown --no-default-features -F png -Z build-std=panic_abort,std
+          cargo +nightly build --release --target wasm32-unknown-unknown --no-default-features -F png -Z build-std=panic_unwind,std
           wasm-bindgen ./target/wasm32-unknown-unknown/release/bitmap_to_png.wasm --out-dir ./pkg --typescript --target web
-          wasm-opt ./pkg/bitmap_to_png_bg.wasm -o ./pkg/bitmap_to_png_bg.wasm -Oz --dce --enable-simd --enable-bulk-memory --enable-nontrapping-float-to-int --enable-mutable-globals
+          wasm-opt ./pkg/bitmap_to_png_bg.wasm -o ./pkg/bitmap_to_png_bg.wasm -Oz --dce --enable-simd --enable-bulk-memory --enable-nontrapping-float-to-int --enable-mutable-globals --emit-exnref --translate-to-exnref
       - run: pnpm run build
       - uses: actions/upload-artifact@v7
         with:
diff --git a/Cargo.toml b/Cargo.toml
index 3cb7baa..c0acd29 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -29,7 +29,7 @@ default = ["png"]
 [profile.release]
 opt-level = 3
 debug = false
-strip = true
+# strip = true
 lto = true
-panic = "abort"
+panic = "unwind"
 codegen-units = 1
diff --git a/src/lib.rs b/src/lib.rs
index 0b3f308..22833dd 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -146,3 +146,11 @@ pub fn bitmap_to_png(rgba_data: &[u8], width: u32, height: u32) -> Result<Vec<u8
     }
     Ok(png_data)
 }
+
+#[wasm_bindgen]
+pub fn divide(a: i32, b: i32) -> i32 {
+    if b == 0 {
+        panic!("division by zero");
+    }
+    a / b
+}