diff --git a/package.json b/package.json
index c65e213..9c6569c 100644
--- a/package.json
+++ b/package.json
@@ -59,7 +59,7 @@
     "url-parse-lax": "^1.0.0"
   },
   "devDependencies": {
-    "ava": "^0.11.0",
+    "ava": "^0.12.0",
     "coveralls": "^2.11.4",
     "get-port": "^2.0.0",
     "into-stream": "^2.0.0",
diff --git a/test/arguments.js b/test/arguments.js
index cc7548e..7692350 100644
--- a/test/arguments.js
+++ b/test/arguments.js
@@ -28,7 +28,7 @@ test('url is required', async t => {
 		await got();
 		t.fail('Exception was not thrown');
 	} catch (err) {
-		t.regexTest(/Parameter `url` must be a string or object, not undefined/, err.message);
+		t.regex(err.message, /Parameter `url` must be a string or object, not undefined/);
 	}
 });
 
@@ -49,7 +49,7 @@ test('should throw with auth in url', async t => {
 		await got('https://test:45d3ps453@account.myservice.com/api/token');
 		t.fail('Exception was not thrown');
 	} catch (err) {
-		t.regexTest(/Basic authentication must be done with auth option/, err.message);
+		t.regex(err.message, /Basic authentication must be done with auth option/);
 	}
 });
 
diff --git a/test/error.js b/test/error.js
index bf9900e..e81cdae 100644
--- a/test/error.js
+++ b/test/error.js
@@ -36,7 +36,7 @@ test('dns message', async t => {
 		t.fail('Exception was not thrown');
 	} catch (err) {
 		t.ok(err);
-		t.regexTest(/getaddrinfo ENOTFOUND/, err.message);
+		t.regex(err.message, /getaddrinfo ENOTFOUND/);
 		t.is(err.host, '.com');
 		t.is(err.method, 'GET');
 	}
@@ -47,7 +47,7 @@ test('options.body error message', async t => {
 		await got(s.url, {body: () => {}});
 		t.fail('Exception was not thrown');
 	} catch (err) {
-		t.regexTest(/options.body must be a ReadableStream, string, Buffer or plain Object/, err.message);
+		t.regex(err.message, /options.body must be a ReadableStream, string, Buffer or plain Object/);
 	}
 });
 
diff --git a/test/json.js b/test/json.js
index a30b8d7..3266714 100644
--- a/test/json.js
+++ b/test/json.js
@@ -47,7 +47,7 @@ test('wraps parsing errors', async t => {
 		await got(`${s.url}/invalid`, {json: true});
 		t.fail('Exception was not thrown');
 	} catch (err) {
-		t.regexTest(/Unexpected token/, err.message);
+		t.regex(err.message, /Unexpected token/);
 		t.ok(err.message.indexOf(err.hostname) !== -1, err.message);
 		t.is(err.path, '/invalid');
 	}
@@ -67,7 +67,7 @@ test('catches errors on invalid non-200 responses', async t => {
 		await got(`${s.url}/non200-invalid`, {json: true});
 		t.fail('Exception was not thrown');
 	} catch (err) {
-		t.regexTest(/Unexpected token/, err.message);
+		t.regex(err.message, /Unexpected token/);
 		t.is(err.response.body, 'Internal error');
 		t.is(err.path, '/non200-invalid');
 	}
diff --git a/test/stream.js b/test/stream.js
index 20652c4..3e28d68 100644
--- a/test/stream.js
+++ b/test/stream.js
@@ -106,7 +106,7 @@ test.cb('have error event', t => {
 			t.fail('response event should not be emitted');
 		})
 		.on('error', err => {
-			t.regexTest(/getaddrinfo ENOTFOUND/, err.message);
+			t.regex(err.message, /getaddrinfo ENOTFOUND/);
 			t.end();
 		});
 });