diff --git a/.github/workflows/build_pyodide.yml b/.github/workflows/build_pyodide.yml
index fed36086b0..14bb047333 100644
--- a/.github/workflows/build_pyodide.yml
+++ b/.github/workflows/build_pyodide.yml
@@ -40,7 +40,7 @@ jobs:
           chmod +x script.sh
           sed -i s/--tty// pyodide/run_docker
           pyodide/run_docker ./script.sh
-          mv dist/ifcopenshell-$VERSION-py3-none-any.whl dist/ifcopenshell-$VERSION+${GITHUB_SHA:0:7}-cp312-cp312-emscripten_3_1_58_wasm32.whl
+          mv dist/ifcopenshell-$VERSION-py3-none-any.whl dist/ifcopenshell-$VERSION+${GITHUB_SHA:0:7}-cp313-cp313-emscripten_4_0_9_wasm32.whl
 
       - name: Configure AWS credentials
         uses: aws-actions/configure-aws-credentials@v4
diff --git a/nix/build-all.py b/nix/build-all.py
index 86bf9e88a3..7196fe2be1 100644
--- a/nix/build-all.py
+++ b/nix/build-all.py
@@ -487,7 +487,7 @@ if platform.system() == "Darwin":
     ADDITIONAL_ARGS = [f"-mmacosx-version-min={TOOLSET}"] + ADDITIONAL_ARGS
 
 if "wasm" in flags:
-    ADDITIONAL_ARGS.extend(("-sWASM_BIGINT", "-fwasm-exceptions", "-lexceptions.js"))
+    ADDITIONAL_ARGS.extend(("-sWASM_BIGINT", "-fwasm-exceptions", "-sSUPPORT_LONGJMP"))
 
 # If the linker supports GC sections, set it up to reduce binary file size
 # -fPIC is required for the shared libraries to work