diff --git a/package.json b/package.json
index 28a1a8a8..50a04845 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
   },
   "license": "BSD-2-Clause",
   "dependencies": {
-    "acorn": "4.0.4",
+    "acorn": "^4.0.11",
     "acorn-jsx": "^3.0.0"
   },
   "devDependencies": {
diff --git a/tests/fixtures/ecma-version/6/arrowFunctions/error-missing-paren.result.js b/tests/fixtures/ecma-version/6/arrowFunctions/error-missing-paren.result.js
index 310984a6..289ba6af 100644
--- a/tests/fixtures/ecma-version/6/arrowFunctions/error-missing-paren.result.js
+++ b/tests/fixtures/ecma-version/6/arrowFunctions/error-missing-paren.result.js
@@ -2,5 +2,5 @@ module.exports = {
     "index": 4,
     "lineNumber": 1,
     "column": 5,
-    "message": "Unexpected token ("
-};
\ No newline at end of file
+    "message": "Parenthesized pattern"
+};
diff --git a/tests/fixtures/ecma-version/6/arrowFunctions/error-wrapped-param.result.js b/tests/fixtures/ecma-version/6/arrowFunctions/error-wrapped-param.result.js
index dce37a90..d4c96605 100644
--- a/tests/fixtures/ecma-version/6/arrowFunctions/error-wrapped-param.result.js
+++ b/tests/fixtures/ecma-version/6/arrowFunctions/error-wrapped-param.result.js
@@ -2,5 +2,5 @@ module.exports = {
     "index": 1,
     "lineNumber": 1,
     "column": 2,
-    "message": "Unexpected token ("
-};
\ No newline at end of file
+    "message": "Parenthesized pattern"
+};
diff --git a/tests/fixtures/ecma-version/6/destructuring/named-param.result.js b/tests/fixtures/ecma-version/6/destructuring/named-param.result.js
index ea977284..7d56e428 100644
--- a/tests/fixtures/ecma-version/6/destructuring/named-param.result.js
+++ b/tests/fixtures/ecma-version/6/destructuring/named-param.result.js
@@ -36,16 +36,16 @@ module.exports = {
                 "loc": {
                     "start": {
                         "line": 1,
-                        "column": 0
+                        "column": 1
                     },
                     "end": {
                         "line": 1,
-                        "column": 30
+                        "column": 29
                     }
                 },
                 "range": [
-                    0,
-                    30
+                    1,
+                    29
                 ],
                 "operator": "=",
                 "left": {
@@ -129,16 +129,16 @@ module.exports = {
                     "loc": {
                         "start": {
                             "line": 1,
-                            "column": 27
+                            "column": 26
                         },
                         "end": {
                             "line": 1,
-                            "column": 30
+                            "column": 29
                         }
                     },
                     "range": [
-                        27,
-                        30
+                        26,
+                        29
                     ],
                     "name": "res"
                 }
@@ -257,47 +257,47 @@ module.exports = {
         },
         {
             "type": "Punctuator",
-            "value": ")",
+            "value": "=",
             "loc": {
                 "start": {
                     "line": 1,
-                    "column": 23
+                    "column": 24
                 },
                 "end": {
                     "line": 1,
-                    "column": 24
+                    "column": 25
                 }
             },
             "range": [
-                23,
-                24
+                24,
+                25
             ]
         },
         {
-            "type": "Punctuator",
-            "value": "=",
+            "type": "Identifier",
+            "value": "res",
             "loc": {
                 "start": {
                     "line": 1,
-                    "column": 25
+                    "column": 26
                 },
                 "end": {
                     "line": 1,
-                    "column": 26
+                    "column": 29
                 }
             },
             "range": [
-                25,
-                26
+                26,
+                29
             ]
         },
         {
-            "type": "Identifier",
-            "value": "res",
+            "type": "Punctuator",
+            "value": ")",
             "loc": {
                 "start": {
                     "line": 1,
-                    "column": 27
+                    "column": 29
                 },
                 "end": {
                     "line": 1,
@@ -305,7 +305,7 @@ module.exports = {
                 }
             },
             "range": [
-                27,
+                29,
                 30
             ]
         },
@@ -328,4 +328,4 @@ module.exports = {
             ]
         }
     ]
-};
\ No newline at end of file
+};
diff --git a/tests/fixtures/ecma-version/6/destructuring/named-param.src.js b/tests/fixtures/ecma-version/6/destructuring/named-param.src.js
index b45ac689..e10d7ffa 100644
--- a/tests/fixtures/ecma-version/6/destructuring/named-param.src.js
+++ b/tests/fixtures/ecma-version/6/destructuring/named-param.src.js
@@ -1 +1 @@
-({ responseText: text }) = res;
\ No newline at end of file
+({ responseText: text } = res);
diff --git a/tests/fixtures/ecma-version/7/error-strict-complex-params.result.js b/tests/fixtures/ecma-version/7/error-strict-complex-params.result.js
index e8ef140e..7dc057b3 100644
--- a/tests/fixtures/ecma-version/7/error-strict-complex-params.result.js
+++ b/tests/fixtures/ecma-version/7/error-strict-complex-params.result.js
@@ -1,6 +1,6 @@
 module.exports = {
-    "index": 24,
-    "lineNumber": 2,
-    "column": 3,
+    "index": 0,
+    "lineNumber": 1,
+    "column": 1,
     "message": "Illegal 'use strict' directive in function with non-simple parameter list"
 };