diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index efc20b6..94fec12 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -38,13 +38,16 @@ jobs:
       - name: Compress Automerge XCFramework
         if: steps.cache-automerge.outputs.cache-hit != 'true'
         run: ./scripts/compress-framework.sh
+      - uses: actions/upload-artifact@v4
+        with:
+          name: libuniffi_automerge
+          path: |
+            libuniffi_automerge.a
+            libuniffi_automerge_threads.a
 
   test-automerge-swift:
     runs-on: macos-14
     needs: automerge-dependencies
-    env:
-      LOCAL_BUILD: true
-      DEVELOPER_DIR: /Applications/Xcode_15.4.app
     steps:
       - uses: actions/checkout@v4
       - name: Restore Automerge XCFramework and library
@@ -59,6 +62,26 @@ jobs:
       - name: Swift tests
         run: swift test
 
+  test-automerge-wasm:
+    runs-on: ubuntu-latest
+    container: swiftwasm/swift:latest
+    needs: automerge-dependencies
+    steps:
+      - uses: actions/checkout@v4
+      - name: Restore Automerge XCFramework and library
+        uses: actions/cache/restore@v4
+        with:
+          path: |
+            automergeFFI.xcframework
+            automergeFFI.xcframework.zip
+            libuniffi_automerge.a
+            libuniffi_automerge_threads.a
+          key: automerge-dependencies-{{ hashFiles(AutomergeUniffi/automerge.swift) }}
+      - name: Build tests
+        run: swift build --swift-sdk wasm32-wasip1 --build-tests -Xlinker "`pwd`/libuniffi_automerge.a" -Xlinker -z -Xlinker stack-size=$((1024 * 1024))
+      - name: Run tests
+        run: wasmtime run --wasm max-wasm-stack=$((1024 * 1024)) --dir . .build/debug/AutomergePackageTests.wasm
+
   rustfmt:
     runs-on: macos-latest
     steps: