diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index e369e1e..67e04df 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -47,7 +47,7 @@ jobs:
         run: |
           rustup toolchain install 1.77.1
           rustup target add wasm32-wasi --toolchain 1.77.1
-          rustup target add wasm32-wasi
+          rustup target add wasm32-wasip1
 
       - uses: actions/setup-node@v4
         with:
@@ -96,7 +96,7 @@ jobs:
         run: |
           rustup toolchain install 1.77.1
           rustup target add wasm32-wasi --toolchain 1.77.1
-          rustup target add wasm32-wasi
+          rustup target add wasm32-wasip1
 
       - name: Restore Embedding Splicer from cache
         uses: actions/cache/restore@v4
@@ -165,7 +165,7 @@ jobs:
         run: |
           rustup toolchain install 1.77.1
           rustup target add wasm32-wasi --toolchain 1.77.1
-          rustup target add wasm32-wasi
+          rustup target add wasm32-wasip1
 
       - name: Restore Embedding Splicer from cache
         uses: actions/cache/restore@v4
diff --git a/Makefile b/Makefile
index 764905c..055538a 100644
--- a/Makefile
+++ b/Makefile
@@ -14,12 +14,12 @@ debug: lib/starlingmonkey_embedding.debug.wasm lib/spidermonkey-embedding-splice
 release: lib/starlingmonkey_embedding.wasm lib/spidermonkey-embedding-splicer.js
 release-weval: lib/starlingmonkey_ics.wevalcache lib/spidermonkey-embedding-splicer.js
 
-lib/spidermonkey-embedding-splicer.js: target/wasm32-wasi/release/spidermonkey_embedding_splicer.wasm crates/spidermonkey-embedding-splicer/wit/spidermonkey-embedding-splicer.wit | obj lib
-	@$(JCO) new target/wasm32-wasi/release/spidermonkey_embedding_splicer.wasm -o obj/spidermonkey-embedding-splicer.wasm --wasi-reactor
+lib/spidermonkey-embedding-splicer.js: target/wasm32-wasip1/release/spidermonkey_embedding_splicer.wasm crates/spidermonkey-embedding-splicer/wit/spidermonkey-embedding-splicer.wit | obj lib
+	@$(JCO) new target/wasm32-wasip1/release/spidermonkey_embedding_splicer.wasm -o obj/spidermonkey-embedding-splicer.wasm --wasi-reactor
 	@$(JCO) transpile -q --name spidermonkey-embedding-splicer obj/spidermonkey-embedding-splicer.wasm -o lib -- -O1
 
-target/wasm32-wasi/release/spidermonkey_embedding_splicer.wasm: Cargo.toml crates/spidermonkey-embedding-splicer/Cargo.toml crates/spidermonkey-embedding-splicer/src/*.rs
-	cargo build --release --target wasm32-wasi
+target/wasm32-wasip1/release/spidermonkey_embedding_splicer.wasm: Cargo.toml crates/spidermonkey-embedding-splicer/Cargo.toml crates/spidermonkey-embedding-splicer/src/*.rs
+	cargo build --release --target wasm32-wasip1
 
 lib/starlingmonkey_embedding.wasm: StarlingMonkey/cmake/* embedding/* StarlingMonkey/runtime/* StarlingMonkey/builtins/* StarlingMonkey/builtins/*/* StarlingMonkey/builtins/*/*/* StarlingMonkey/include/* | lib
 	cmake -B build-release -DCMAKE_BUILD_TYPE=Release
diff --git a/crates/spidermonkey-embedding-splicer/src/bindgen.rs b/crates/spidermonkey-embedding-splicer/src/bindgen.rs
index 85e586f..54fe15c 100644
--- a/crates/spidermonkey-embedding-splicer/src/bindgen.rs
+++ b/crates/spidermonkey-embedding-splicer/src/bindgen.rs
@@ -429,7 +429,7 @@ impl JsBindgen<'_> {
                                 // can be used when an explicit export is not
                                 // defined by the guest content.
                                 if iface_name == "incoming-handler"
-                                    || name == "wasi:http/incoming-handler@0.2.0"
+                                    || name.starts_with("wasi:http/incoming-handler@0.2.")
                                 {
                                     if !features.contains(&Features::Http) {
                                         bail!(
diff --git a/crates/spidermonkey-embedding-splicer/src/lib.rs b/crates/spidermonkey-embedding-splicer/src/lib.rs
index 2081283..5a9e869 100644
--- a/crates/spidermonkey-embedding-splicer/src/lib.rs
+++ b/crates/spidermonkey-embedding-splicer/src/lib.rs
@@ -176,7 +176,7 @@ impl Guest for SpidermonkeyEmbeddingSplicerComponent {
                 .find(|(key, _)| {
                     engine_resolve
                         .name_world_key(key)
-                        .starts_with("wasi:http/incoming-handler@0.2")
+                        .starts_with("wasi:http/incoming-handler@0.2.")
                 })
                 .map(|(key, _)| key.clone());
 
diff --git a/test/builtins/performance.js b/test/builtins/performance.js
index 2c68268..3399f87 100644
--- a/test/builtins/performance.js
+++ b/test/builtins/performance.js
@@ -15,14 +15,14 @@ export const source = `
   };
 `;
 
-export async function test (run) {
+export async function test(run) {
   const { stdout, stderr } = await run();
   strictEqual(stdout, 'Calculated fib 1000: 4.346655768693743e+208\n');
 
   ok(stderr.includes(' ms'));
   const time = Number(stderr.split(' ms')[0]);
   // TODO: fix back to half a millisecond when Weval fix is added
-  if (time > 3) {
+  if (time > 4) {
     throw new Error('took more than half a millisecond - ' + time + ' ms');
   }
 }