diff --git a/package.json b/package.json
index 0be3ba0b..a0880cc8 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,7 @@
   },
   "license": "BSD-2-Clause",
   "dependencies": {
-    "acorn": "^3.0.4",
+    "acorn": "^3.1.0",
     "acorn-jsx": "^3.0.0"
   },
   "devDependencies": {
diff --git a/tests/fixtures/ecma-version/6/destructuring-and-spread/error-complex-destructured-spread-first.result.js b/tests/fixtures/ecma-version/6/destructuring-and-spread/error-complex-destructured-spread-first.result.js
index fc835158..6f230234 100644
--- a/tests/fixtures/ecma-version/6/destructuring-and-spread/error-complex-destructured-spread-first.result.js
+++ b/tests/fixtures/ecma-version/6/destructuring-and-spread/error-complex-destructured-spread-first.result.js
@@ -1,6 +1,6 @@
 module.exports = {
-    "index": 1,
+    "index": 4,
     "lineNumber": 1,
-    "column": 2,
-    "message": "Assigning to rvalue"
+    "column": 5,
+    "message": "Comma is not permitted after the rest element"
 };
\ No newline at end of file
diff --git a/tests/fixtures/ecma-version/6/destructuring-and-spread/invalid-not-final-array-empty.result.js b/tests/fixtures/ecma-version/6/destructuring-and-spread/invalid-not-final-array-empty.result.js
index 38ac0e9f..6f230234 100644
--- a/tests/fixtures/ecma-version/6/destructuring-and-spread/invalid-not-final-array-empty.result.js
+++ b/tests/fixtures/ecma-version/6/destructuring-and-spread/invalid-not-final-array-empty.result.js
@@ -1,6 +1,6 @@
 module.exports = {
-    "index": 5,
+    "index": 4,
     "lineNumber": 1,
-    "column": 6,
-    "message": "Trailing comma is not permitted in destructuring patterns"
+    "column": 5,
+    "message": "Comma is not permitted after the rest element"
 };
\ No newline at end of file
diff --git a/tests/fixtures/ecma-version/6/destructuring-and-spread/not-final-array.result.js b/tests/fixtures/ecma-version/6/destructuring-and-spread/not-final-array.result.js
index fc835158..6f230234 100644
--- a/tests/fixtures/ecma-version/6/destructuring-and-spread/not-final-array.result.js
+++ b/tests/fixtures/ecma-version/6/destructuring-and-spread/not-final-array.result.js
@@ -1,6 +1,6 @@
 module.exports = {
-    "index": 1,
+    "index": 4,
     "lineNumber": 1,
-    "column": 2,
-    "message": "Assigning to rvalue"
+    "column": 5,
+    "message": "Comma is not permitted after the rest element"
 };
\ No newline at end of file
diff --git a/tests/fixtures/ecma-version/6/restParams/error-not-last.result.js b/tests/fixtures/ecma-version/6/restParams/error-not-last.result.js
index 4e7e97af..321408e4 100644
--- a/tests/fixtures/ecma-version/6/restParams/error-not-last.result.js
+++ b/tests/fixtures/ecma-version/6/restParams/error-not-last.result.js
@@ -2,5 +2,5 @@ module.exports = {
     "index": 18,
     "lineNumber": 1,
     "column": 19,
-    "message": "Unexpected token ,"
+    "message": "Comma is not permitted after the rest element"
 };
\ No newline at end of file