diff --git a/.travis.yml b/.travis.yml
index 837f428..3bf9463 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,4 @@
 dist: trusty
-sudo: required
 language: rust
 rust:
   - nightly
@@ -9,12 +8,12 @@ addons:
     sources:
     - ubuntu-toolchain-r-test
     packages:
-    - gcc-6
-    - g++-6
+    - gcc-8
+    - g++-8
     - cmake
 script:
-- export CC=/usr/bin/gcc-6
-- export CXX=/usr/bin/g++-6
+- export CC=/usr/bin/gcc-8
+- export CXX=/usr/bin/g++-8
 - if [ "$TRAVIS_RUST_VERSION" == "nightly" ]; then cargo build --no-default-features; fi
 - cargo build --release --verbose
 - cargo test --release --verbose
@@ -32,3 +31,5 @@ env:
   global:
     - secure: o0FH3sDSvQPBgGku0QU86HrSCH7YUN+l6WD4jk2OKkb/OVaYHR/9zna9/v7V5cQarg7uo4s7T8xSd6HJD3B+yxl2t73uPD+sqgf3hWx1PSI9ARtg3YWhq/l+Bl79Mm3Bz9hW68wPHXrKa95bDu2oYX6o15jWIYEMT4BUrGJWqhAoADnVdDttBaqKEkCBl1dFpRBagFV0/0eLXya8b+/6T7Q7Y8ZtINOD54fw5iDqAIlcKEyTWNF96/ZMOTfachs58hEn/EAFKLRWnarrGl9+jK/g7fU5+2QivJw8qVidqJvTA9A6FhRzELcwbS+okx63ViZe/JRO/GeGo3QR/Q71ukneu62EQf608B12h/3SLMomTlhv0swIvcehcUDXxCkujFN1dm3b68Tun9kbfnDyoTSy5dOLd92zkjgXo2M8PGfwLLceZVUovnrE9e9Je/lji9O+9bpFbxBkvrXnK8jAAmNVdfmefY/qeDW2HDFcP9aqquXXQ20JQw1fnd/R5y9MC+IKcKxaRtKoioDpQXtxj6JA7YyBzrMnVcmtOxUzvplNYPif9BBFtuBNKUIW5h3lcoyDWesRgzt5MXsm8q+femBDhkxbb24RU8hd8j5heUNtblqgADQpssH0eNHqYgSHgwYRhuRgjByTMt6rf0Da/uANoGnBZQWbwLsW9h/GGN0=
     - RUSTFLAGS=--cfg=slow_assertions
+    - CC=/usr/bin/gcc-8
+    - CXX=/usr/bin/g++-8
diff --git a/spec/Cargo.toml b/spec/Cargo.toml
index 5a12f8c..3bbef65 100644
--- a/spec/Cargo.toml
+++ b/spec/Cargo.toml
@@ -9,5 +9,5 @@ homepage = "https://github.com/nikvolf/parity-wasm"
 description = "parity-wasm testsuite"
 
 [dependencies]
-wabt = "0.2"
+wabt = "0.6"
 parity-wasm = { path = ".." }
diff --git a/spec/src/run.rs b/spec/src/run.rs
index 9bb4d62..e0781d3 100644
--- a/spec/src/run.rs
+++ b/spec/src/run.rs
@@ -1,23 +1,34 @@
-use wabt::script::{ScriptParser, Command, CommandKind};
-use parity_wasm::elements::{Module, deserialize_buffer};
+use parity_wasm::elements::{deserialize_buffer, Module};
+use wabt::script::{Command, CommandKind, ScriptParser};
+
+fn read_file(filename: &str) -> String {
+	use std::fs::File;
+	use std::io::prelude::*;
+
+	let mut f = File::open(filename).expect("file not found");
+
+	let mut contents = String::new();
+	f.read_to_string(&mut contents)
+		.expect("something went wrong reading the file");
+
+	contents
+}
 
 pub fn spec(path: &str) {
-	let mut parser = ScriptParser::from_file(&format!("./testsuite/{}.wast", path)).expect("Can't read spec script");
+	let mut parser = {
+		let source = read_file(&format!("./testsuite/{}.wast", path));
+		ScriptParser::<f32, f64>::from_str(&source).expect("Can't read spec script")
+	};
 	while let Some(Command { kind, line }) = parser.next().expect("Failed to iterate") {
 		match kind {
-			CommandKind::AssertMalformed { module, .. } =>
-			{
-				match deserialize_buffer::<Module>(
-					&module.into_vec().expect("Invalid filename provided")
-				) {
+			CommandKind::AssertMalformed { module, .. } => {
+				match deserialize_buffer::<Module>(&module.into_vec()) {
 					Ok(_) => panic!("Expected invalid module definition, got some module!"),
 					Err(e) => println!("assert_invalid at line {} - success ({:?})", line, e),
 				}
 			}
 			CommandKind::Module { module, .. } => {
-				match deserialize_buffer::<Module>(
-					&module.into_vec().expect("Invalid filename provided")
-				) {
+				match deserialize_buffer::<Module>(&module.into_vec()) {
 					Ok(_) => println!("module at line {} - parsed ok", line),
 					Err(e) => panic!("Valid module reported error ({:?})", e),
 				}
@@ -27,4 +38,4 @@ pub fn spec(path: &str) {
 			}
 		}
 	}
-}
\ No newline at end of file
+}