diff --git a/lib/wasm-sync/WebAssemblyParser.js b/lib/wasm-sync/WebAssemblyParser.js
index c3078cf1c5b..e3ea0a814f2 100644
--- a/lib/wasm-sync/WebAssemblyParser.js
+++ b/lib/wasm-sync/WebAssemblyParser.js
@@ -17,7 +17,7 @@ const WebAssemblyImportDependency = require("../dependencies/WebAssemblyImportDe
 /** @typedef {import("../Parser").ParserState} ParserState */
 /** @typedef {import("../Parser").PreparsedAst} PreparsedAst */
 
-const JS_COMPAT_TYPES = new Set(["i32", "f32", "f64"]);
+const JS_COMPAT_TYPES = new Set(["i32", "i64", "f32", "f64"]);
 
 /**
  * @param {t.Signature} signature the func signature
diff --git a/test/cases/wasm/imports-complex-types/index.js b/test/cases/wasm/imports-complex-types/index.js
index c2e0b23fead..3d2b113b93f 100644
--- a/test/cases/wasm/imports-complex-types/index.js
+++ b/test/cases/wasm/imports-complex-types/index.js
@@ -1,6 +1,6 @@
 it("should allow to run a WebAssembly module with non-js-compatible imports", function() {
 	return import("./wasm.wasm").then(function(wasm) {
-		const result = wasm.testI64();
+		const result = wasm.testV128();
 		expect(result).toEqual(42);
 	});
 });
diff --git a/test/cases/wasm/imports-complex-types/other.wasm b/test/cases/wasm/imports-complex-types/other.wasm
index 70c5aee0fa3..6949d18dd24 100644
Binary files a/test/cases/wasm/imports-complex-types/other.wasm and b/test/cases/wasm/imports-complex-types/other.wasm differ
diff --git a/test/cases/wasm/imports-complex-types/test.filter.js b/test/cases/wasm/imports-complex-types/test.filter.js
index 23177349638..390fa4a4dfc 100644
--- a/test/cases/wasm/imports-complex-types/test.filter.js
+++ b/test/cases/wasm/imports-complex-types/test.filter.js
@@ -1,5 +1,5 @@
-var supportsWebAssembly = require("../../../helpers/supportsWebAssembly");
+const supports = require("webassembly-feature");
 
 module.exports = function(config) {
-	return supportsWebAssembly();
+	return supports["simd"]();
 };
diff --git a/test/cases/wasm/imports-complex-types/wasm.wasm b/test/cases/wasm/imports-complex-types/wasm.wasm
index 8374df1439f..a94d0954e7b 100644
Binary files a/test/cases/wasm/imports-complex-types/wasm.wasm and b/test/cases/wasm/imports-complex-types/wasm.wasm differ
diff --git a/test/configCases/wasm/bigints/index.js b/test/configCases/wasm/bigints/index.js
new file mode 100644
index 00000000000..35b576ddeda
--- /dev/null
+++ b/test/configCases/wasm/bigints/index.js
@@ -0,0 +1,9 @@
+it("should allow converting i64s to JS bigints", async () => {
+	const { getI64 } = await import("./wasm.wat");
+	expect(getI64()).toEqual(42n);
+});
+
+it("should allow converting JS bigints to i64s", async () => {
+	const { takeI64 } = await import("./wasm.wat");
+	takeI64(42n);
+})
diff --git a/test/configCases/wasm/bigints/test.filter.js b/test/configCases/wasm/bigints/test.filter.js
new file mode 100644
index 00000000000..fedc9379c36
--- /dev/null
+++ b/test/configCases/wasm/bigints/test.filter.js
@@ -0,0 +1,5 @@
+const supports = require("webassembly-feature");
+
+module.exports = function(config) {
+	return supports["JS-BigInt-integration"]();
+};
diff --git a/test/configCases/wasm/bigints/wasm.wat b/test/configCases/wasm/bigints/wasm.wat
new file mode 100644
index 00000000000..94789d52d4b
--- /dev/null
+++ b/test/configCases/wasm/bigints/wasm.wat
@@ -0,0 +1,4 @@
+(module
+  (func (export "getI64") (result i64)
+    i64.const 42)
+  (func (export "takeI64") (param i64)))
diff --git a/test/configCases/wasm/bigints/webpack.config.js b/test/configCases/wasm/bigints/webpack.config.js
new file mode 100644
index 00000000000..63567a47504
--- /dev/null
+++ b/test/configCases/wasm/bigints/webpack.config.js
@@ -0,0 +1,16 @@
+/** @type {import("../../../../").Configuration} */
+module.exports = {
+	entry: "./index",
+	module: {
+		rules: [
+			{
+				test: /\.wat$/,
+				loader: "wast-loader",
+				type: "webassembly/sync"
+			}
+		]
+	},
+	experiments: {
+		syncWebAssembly: true
+	}
+};