diff --git a/.github/workflows/xcframework.yml b/.github/workflows/xcframework.yml
index 219d3f1..a9a54b7 100644
--- a/.github/workflows/xcframework.yml
+++ b/.github/workflows/xcframework.yml
@@ -1,8 +1,9 @@
 name: XCFramework
 
 # Builds NemoTextProcessing.xcframework (macOS universal + iOS device + iOS
-# simulator) so Apple consumers (e.g. FluidAudio) can link the native FFI via
-# a SwiftPM `.binaryTarget(url:checksum:)` instead of hand-linking the lib.
+# simulator universal + Mac Catalyst universal) so Apple consumers (e.g.
+# FluidAudio) can link the native FFI via a SwiftPM `.binaryTarget(url:checksum:)`
+# instead of hand-linking the lib.
 on:
   push:
     tags: ["v*"]
@@ -27,7 +28,7 @@ jobs:
 
       - uses: dtolnay/rust-toolchain@stable
         with:
-          targets: aarch64-apple-darwin,x86_64-apple-darwin,aarch64-apple-ios,aarch64-apple-ios-sim
+          targets: aarch64-apple-darwin,x86_64-apple-darwin,aarch64-apple-ios,aarch64-apple-ios-sim,x86_64-apple-ios,aarch64-apple-ios-macabi,x86_64-apple-ios-macabi
 
       - name: Build xcframework
         run: ./build-xcframework.sh
diff --git a/build-xcframework.sh b/build-xcframework.sh
index 94f47c7..190afa1 100755
--- a/build-xcframework.sh
+++ b/build-xcframework.sh
@@ -2,7 +2,12 @@
 set -e
 
 # Build universal static library for Apple platforms
-# Outputs: NemoTextProcessing.xcframework
+# Outputs: NemoTextProcessing.xcframework with slices for macOS (arm64 +
+# x86_64), iOS device (arm64), iOS Simulator (arm64 + x86_64) and Mac Catalyst
+# (arm64 + x86_64). Rust targets required (rustup target add ...):
+#   aarch64-apple-darwin x86_64-apple-darwin aarch64-apple-ios
+#   aarch64-apple-ios-sim x86_64-apple-ios
+#   aarch64-apple-ios-macabi x86_64-apple-ios-macabi
 
 SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
 BUILD_DIR="$SCRIPT_DIR/build"
@@ -23,6 +28,15 @@ cargo build --release --features "ffi,fst-engine" --target aarch64-apple-ios
 echo "Building for iOS Simulator (arm64)..."
 cargo build --release --features "ffi,fst-engine" --target aarch64-apple-ios-sim
 
+echo "Building for iOS Simulator (x86_64)..."
+cargo build --release --features "ffi,fst-engine" --target x86_64-apple-ios
+
+echo "Building for Mac Catalyst (arm64)..."
+cargo build --release --features "ffi,fst-engine" --target aarch64-apple-ios-macabi
+
+echo "Building for Mac Catalyst (x86_64)..."
+cargo build --release --features "ffi,fst-engine" --target x86_64-apple-ios-macabi
+
 echo "Creating universal macOS library..."
 mkdir -p "$BUILD_DIR/macos"
 lipo -create \
@@ -30,6 +44,20 @@ lipo -create \
     target/x86_64-apple-darwin/release/libtext_processing_rs.a \
     -output "$BUILD_DIR/macos/libtext_processing_rs.a"
 
+echo "Creating universal iOS Simulator library..."
+mkdir -p "$BUILD_DIR/ios-simulator"
+lipo -create \
+    target/aarch64-apple-ios-sim/release/libtext_processing_rs.a \
+    target/x86_64-apple-ios/release/libtext_processing_rs.a \
+    -output "$BUILD_DIR/ios-simulator/libtext_processing_rs.a"
+
+echo "Creating universal Mac Catalyst library..."
+mkdir -p "$BUILD_DIR/maccatalyst"
+lipo -create \
+    target/aarch64-apple-ios-macabi/release/libtext_processing_rs.a \
+    target/x86_64-apple-ios-macabi/release/libtext_processing_rs.a \
+    -output "$BUILD_DIR/maccatalyst/libtext_processing_rs.a"
+
 echo "Creating XCFramework..."
 # NOTE: headers live in swift/include/CNemoTextProcessing/ so each slice gets
 # Headers/CNemoTextProcessing/module.modulemap. Xcode's ProcessXCFramework copies
@@ -43,7 +71,9 @@ xcodebuild -create-xcframework \
     -headers swift/include \
     -library target/aarch64-apple-ios/release/libtext_processing_rs.a \
     -headers swift/include \
-    -library target/aarch64-apple-ios-sim/release/libtext_processing_rs.a \
+    -library "$BUILD_DIR/ios-simulator/libtext_processing_rs.a" \
+    -headers swift/include \
+    -library "$BUILD_DIR/maccatalyst/libtext_processing_rs.a" \
     -headers swift/include \
     -output "$OUTPUT_DIR/NemoTextProcessing.xcframework"