diff --git a/.github/workflows/wasm_build.yml b/.github/workflows/wasm_build.yml
index 3f7c11c2..ed168a90 100644
--- a/.github/workflows/wasm_build.yml
+++ b/.github/workflows/wasm_build.yml
@@ -4,6 +4,7 @@ env:
   CARGO_TERM_COLOR: always
   SSH_AUTH_SOCK: /tmp/ssh_agent.sock
   WASM_BINDGEN_TEST_TIMEOUT: 1000
+  RUSTFLAGS: "--cfg mls_build_async"
 jobs:
   BuildAndTest:
     runs-on: [ubuntu-latest]
@@ -20,9 +21,6 @@ jobs:
     - name: WASM mls-rs
       working-directory: mls-rs
       run: wasm-pack test --headless --chrome --release --lib --test '*' --features test_util
-    - name: WASM mls-rs-core
-      working-directory: mls-rs-core
-      run: wasm-pack test --headless --chrome --release
     - name: WASM mls-rs-identity-x509
       working-directory: mls-rs-identity-x509
       run: wasm-pack test --headless --chrome --release
diff --git a/mls-rs-core/src/crypto/test_suite.rs b/mls-rs-core/src/crypto/test_suite.rs
index 44430e7f..0094622f 100644
--- a/mls-rs-core/src/crypto/test_suite.rs
+++ b/mls-rs-core/src/crypto/test_suite.rs
@@ -11,6 +11,7 @@ use super::{
     CipherSuiteProvider, CryptoProvider, HpkeCiphertext, HpkeContextS, HpkePublicKey, HpkeSecretKey,
 };
 
+#[cfg(all(not(mls_build_async), not(target_arch = "wasm32"), feature = "std"))]
 const PATH: &str = concat!(
     env!("CARGO_MANIFEST_DIR"),
     "/test_data/crypto_provider.json"
diff --git a/mls-rs-crypto-rustcrypto/Cargo.toml b/mls-rs-crypto-rustcrypto/Cargo.toml
index 01b39880..2d758040 100644
--- a/mls-rs-crypto-rustcrypto/Cargo.toml
+++ b/mls-rs-crypto-rustcrypto/Cargo.toml
@@ -76,5 +76,8 @@ mls-rs-crypto-hpke = { path = "../mls-rs-crypto-hpke", default-features = false,
 [target.'cfg(mls_build_async)'.dependencies]
 async-trait = "0.1.74"
 
+[target.'cfg(target_arch = "wasm32")'.dev-dependencies]
+wasm-bindgen-test = { version = "0.3.26", default-features = false }
+
 [lints.rust]
 unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mls_build_async)'] }
diff --git a/mls-rs-crypto-rustcrypto/src/lib.rs b/mls-rs-crypto-rustcrypto/src/lib.rs
index 32a23e30..f0ade621 100644
--- a/mls-rs-crypto-rustcrypto/src/lib.rs
+++ b/mls-rs-crypto-rustcrypto/src/lib.rs
@@ -43,6 +43,9 @@ use zeroize::Zeroizing;
 use alloc::vec;
 use alloc::vec::Vec;
 
+#[cfg(all(test, target_arch = "wasm32"))]
+wasm_bindgen_test::wasm_bindgen_test_configure!(run_in_browser);
+
 #[derive(Debug)]
 #[cfg_attr(feature = "std", derive(thiserror::Error))]
 pub enum RustCryptoError {
@@ -388,3 +391,10 @@ fn mls_core_tests() {
         mls_rs_core::crypto::test_suite::verify_hpke_encap_tests(&mut hpke, cs);
     }
 }
+
+#[cfg(all(test, target_arch = "wasm32"))]
+#[wasm_bindgen_test::wasm_bindgen_test]
+async fn mls_rs_core_test() {
+    let provider = RustCryptoProvider::new();
+    mls_rs_core::crypto::test_suite::verify_tests(&provider, true).await;
+}
diff --git a/mls-rs-crypto-webcrypto/src/aead.rs b/mls-rs-crypto-webcrypto/src/aead.rs
index dac50879..d13c2b61 100644
--- a/mls-rs-crypto-webcrypto/src/aead.rs
+++ b/mls-rs-crypto-webcrypto/src/aead.rs
@@ -83,9 +83,9 @@ impl Aead {
             .then_some(())
             .ok_or(CryptoError::WrongKeyLength)?;
 
-        let mut params = AesGcmParams::new(key_type.algorithm(), &Uint8Array::from(nonce));
+        let params = AesGcmParams::new(key_type.algorithm(), &Uint8Array::from(nonce));
         let aad = Uint8Array::from(aad.unwrap_or_default());
-        params.additional_data(&aad);
+        params.set_additional_data(&aad);
         let key = key_type.import(&crypto, key).await?;
 
         let out = match key_type {
diff --git a/mls-rs-crypto-webcrypto/src/key_type.rs b/mls-rs-crypto-webcrypto/src/key_type.rs
index 381cf1bc..a69794eb 100644
--- a/mls-rs-crypto-webcrypto/src/key_type.rs
+++ b/mls-rs-crypto-webcrypto/src/key_type.rs
@@ -86,8 +86,8 @@ impl KeyType {
             | KeyType::EcdhSecret(curve)
             | KeyType::EcdsaPublic(curve)
             | KeyType::EcdsaSecret(curve) => {
-                let mut params = EcKeyImportParams::new(self.algorithm());
-                params.named_curve(curve);
+                let params = EcKeyImportParams::new(self.algorithm());
+                params.set_named_curve(curve);
 
                 crypto.import_key_with_object(self.format(), &key, &params, true, &key_usages)?
             }
diff --git a/mls-rs-identity-x509/src/lib.rs b/mls-rs-identity-x509/src/lib.rs
index 1d06884c..a8636ecd 100644
--- a/mls-rs-identity-x509/src/lib.rs
+++ b/mls-rs-identity-x509/src/lib.rs
@@ -21,6 +21,9 @@ pub use traits::*;
 
 pub use mls_rs_core::identity::{CertificateChain, DerCertificate};
 
+#[cfg(all(test, target_arch = "wasm32"))]
+wasm_bindgen_test::wasm_bindgen_test_configure!(run_in_browser);
+
 #[derive(Clone, PartialEq, Eq)]
 /// X.509 certificate request in DER format.
 pub struct DerCertificateRequest(Vec<u8>);