diff --git a/build.rs b/build.rs
index a4890c76..b8c784fb 100644
--- a/build.rs
+++ b/build.rs
@@ -4,5 +4,7 @@ fn main() {
     println!("cargo:rerun-if-changed=providers/javy_quickjs_provider_v3.wasm");
     println!("cargo:rerun-if-changed=providers/shopify_functions_javy_v1.wasm");
     println!("cargo:rerun-if-changed=providers/shopify_functions_javy_v2.wasm");
+    println!("cargo:rerun-if-changed=providers/shopify_functions_javy_v3.wasm");
+    println!("cargo:rerun-if-changed=providers/shopify_functions_javy_v4.wasm");
     println!("cargo:rerun-if-changed=providers/shopify_function_v1.wasm");
 }
diff --git a/providers/shopify_functions_javy_v4.wasm b/providers/shopify_functions_javy_v4.wasm
new file mode 100644
index 00000000..ab49dbc0
Binary files /dev/null and b/providers/shopify_functions_javy_v4.wasm differ
diff --git a/tests/fixtures/README.md b/tests/fixtures/README.md
index 91c4f45c..b5b6fe03 100644
--- a/tests/fixtures/README.md
+++ b/tests/fixtures/README.md
@@ -43,6 +43,11 @@ js_function_javy_plugin_v3.wasm:
 javy build -C dynamic -C plugin=providers/shopify_functions_javy_v3.wasm -o tests/fixtures/build/js_function_javy_plugin_v3.wasm tests/fixtures/js_function_javy_plugin_v3/function.js
 ```
 
+js_function_javy_plugin_v4.wasm:
+```
+javy build -C dynamic -C plugin=providers/shopify_functions_javy_v4.wasm -o tests/fixtures/build/js_function_javy_plugin_v4.wasm tests/fixtures/js_function_javy_plugin_v4/function.js
+```
+
 **`*.wat` examples:**
 ```
 find tests/fixtures -maxdepth 1 -type f -name "*.wat" \
diff --git a/tests/fixtures/build/js_function_javy_plugin_v4.wasm b/tests/fixtures/build/js_function_javy_plugin_v4.wasm
new file mode 100644
index 00000000..0f7c9816
Binary files /dev/null and b/tests/fixtures/build/js_function_javy_plugin_v4.wasm differ
diff --git a/tests/fixtures/js_function_javy_plugin_v4/function.js b/tests/fixtures/js_function_javy_plugin_v4/function.js
new file mode 100644
index 00000000..3cf088f6
--- /dev/null
+++ b/tests/fixtures/js_function_javy_plugin_v4/function.js
@@ -0,0 +1,4 @@
+const inputObj = ShopifyFunction.readInput();
+console.error("this is an error message");
+const outputObj = { hello: inputObj.hello + " output" };
+ShopifyFunction.writeOutput(outputObj);
diff --git a/tests/integration_tests.rs b/tests/integration_tests.rs
index 46120b0d..5baa864a 100644
--- a/tests/integration_tests.rs
+++ b/tests/integration_tests.rs
@@ -438,21 +438,28 @@ mod tests {
 
     #[test]
     fn run_javy_plugin_v3() -> Result<()> {
+        run_javy_plugin_fixture("tests/fixtures/build/js_function_javy_plugin_v3.wasm")
+    }
+
+    #[test]
+    fn run_javy_plugin_v4() -> Result<()> {
+        run_javy_plugin_fixture("tests/fixtures/build/js_function_javy_plugin_v4.wasm")
+    }
+
+    fn run_javy_plugin_fixture(function_path: &str) -> Result<()> {
         let mut cmd = Command::new(cargo_bin!());
         let input = temp_input(json!({"hello": "world"}))?;
 
-        cmd.args([
-            "--function",
-            "tests/fixtures/build/js_function_javy_plugin_v3.wasm",
-        ])
-        .arg("--json")
-        .arg("--input")
-        .arg(input.as_os_str())
-        .stdout(Stdio::piped())
-        .spawn()
-        .expect("Failed to spawn child process")
-        .wait_with_output()
-        .expect("Failed waiting for output");
+        cmd.arg("--function")
+            .arg(function_path)
+            .arg("--json")
+            .arg("--input")
+            .arg(input.as_os_str())
+            .stdout(Stdio::piped())
+            .spawn()
+            .expect("Failed to spawn child process")
+            .wait_with_output()
+            .expect("Failed waiting for output");
 
         // Command should succeed
         cmd.assert().success();