diff --git a/lib/WebpackOptionsDefaulter.js b/lib/WebpackOptionsDefaulter.js
index d947e6a97..0ff86d5a8 100644
--- a/lib/WebpackOptionsDefaulter.js
+++ b/lib/WebpackOptionsDefaulter.js
@@ -73,6 +73,11 @@ class WebpackOptionsDefaulter extends OptionsDefaulter {
 			{
 				test: /\.wasm$/i,
 				type: "webassembly/experimental"
+			},
+			{
+				test: /\.wast$/i,
+				loader: "@webassemblyjs/wast-loader",
+				type: "webassembly/experimental"
 			}
 		]);
 
diff --git a/package.json b/package.json
index 37c932e86..ce8548bec 100644
--- a/package.json
+++ b/package.json
@@ -8,6 +8,7 @@
     "@webassemblyjs/ast": "1.4.3",
     "@webassemblyjs/wasm-edit": "1.4.3",
     "@webassemblyjs/wasm-parser": "1.4.3",
+    "@webassemblyjs/wast-loader": "^1.5.4",
     "acorn": "^5.0.0",
     "acorn-dynamic-import": "^3.0.0",
     "ajv": "^6.1.0",
diff --git a/test/cases/wasm/decoding/index.js b/test/cases/wasm/decoding/index.js
index 5951edc43..a5e4265f1 100644
--- a/test/cases/wasm/decoding/index.js
+++ b/test/cases/wasm/decoding/index.js
@@ -1,5 +1,5 @@
 it("should support wasm compiled from c++", function() {
-	return import("./memory3.wasm").then(function(wasm) {
+	return import("./memory3.wast").then(function(wasm) {
 		expect(wasm._Z3getv()).toBe(0);
 		wasm._Z3seti(42);
 		expect(wasm._Z3getv()).toBe(42);
@@ -7,7 +7,7 @@ it("should support wasm compiled from c++", function() {
 });
 
 it("should raw memory export without data", function() {
-	return import("./memory2.wasm").then(function(wasm) {
+	return import("./memory2.wast").then(function(wasm) {
 		expect(wasm.memory).toBeInstanceOf(WebAssembly.Memory);
 		expect(wasm.memory.buffer).toBeInstanceOf(ArrayBuffer);
 		expect(wasm.memory.buffer.byteLength).toBe(1 << 16);
diff --git a/test/cases/wasm/decoding/memory2.wasm b/test/cases/wasm/decoding/memory2.wasm
deleted file mode 100644
index 654daf1d9..000000000
Binary files a/test/cases/wasm/decoding/memory2.wasm and /dev/null differ
diff --git a/test/cases/wasm/decoding/memory2.wast b/test/cases/wasm/decoding/memory2.wast
new file mode 100644
index 000000000..0a1657bb7
--- /dev/null
+++ b/test/cases/wasm/decoding/memory2.wast
@@ -0,0 +1,3 @@
+(module
+  (memory $memory (export "memory") 1))
+
diff --git a/test/cases/wasm/decoding/memory3.wasm b/test/cases/wasm/decoding/memory3.wasm
deleted file mode 100644
index 0c2ca20c8..000000000
Binary files a/test/cases/wasm/decoding/memory3.wasm and /dev/null differ
diff --git a/test/cases/wasm/decoding/memory3.wast b/test/cases/wasm/decoding/memory3.wast
new file mode 100644
index 000000000..2382a8661
--- /dev/null
+++ b/test/cases/wasm/decoding/memory3.wast
@@ -0,0 +1,14 @@
+(module
+  (type $t0 (func (param i32)))
+  (type $t1 (func (result i32)))
+  (func $_Z3seti (export "_Z3seti") (type $t0) (param $p0 i32)
+    (i32.store offset=12
+      (i32.const 0)
+      (get_local $p0)))
+  (func $_Z3getv (export "_Z3getv") (type $t1) (result i32)
+    (i32.load offset=12
+      (i32.const 0)))
+  (table $T0 0 anyfunc)
+  (memory $memory (export "memory") 1)
+  (data (i32.const 12) "\00\00\00\00"))
+
diff --git a/yarn.lock b/yarn.lock
index 4a1db94e3..0d7604911 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -125,6 +125,12 @@
     "@webassemblyjs/wasm-parser" "1.4.3"
     webassemblyjs "1.4.3"
 
+"@webassemblyjs/wast-loader@^1.5.4":
+  version "1.5.4"
+  resolved "https://registry.yarnpkg.com/@webassemblyjs/wast-loader/-/wast-loader-1.5.4.tgz#6db66671edc5955cb77cbf90a6c4f627f6335a6a"
+  dependencies:
+    wabt "^1.0.0"
+
 "@webassemblyjs/wast-parser@1.4.3":
   version "1.4.3"
   resolved "https://registry.yarnpkg.com/@webassemblyjs/wast-parser/-/wast-parser-1.4.3.tgz#3250402e2c5ed53dbe2233c9de1fe1f9f0d51745"
@@ -6257,6 +6263,10 @@ w3c-hr-time@^1.0.1:
   dependencies:
     browser-process-hrtime "^0.1.2"
 
+wabt@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/wabt/-/wabt-1.0.0.tgz#f33a5c4a6405370ec80ba97e782d092f1d599ff4"
+
 walker@~1.0.5:
   version "1.0.7"
   resolved "https://registry.yarnpkg.com/walker/-/walker-1.0.7.tgz#2f7f9b8fd10d677262b18a884e28d19618e028fb"