diff --git a/README.md b/README.md
index e70598f6..e316d538 100644
--- a/README.md
+++ b/README.md
@@ -115,7 +115,7 @@ Method                                                   | Description
 ### Comparison Assertions
 
 Method                                          | Description
------------------------------------------------ | --------------------------------------------------
+----------------------------------------------- | ------------------------------------------------------------------
 `true($value, $message = '')`                   | Check that a value is `true`
 `false($value, $message = '')`                  | Check that a value is `false`
 `notFalse($value, $message = '')`               | Check that a value is not `false`
@@ -132,7 +132,8 @@ Method                                          | Description
 `lessThan($value, $value2, $message = '')`      | Check that a value is less than another
 `lessThanEq($value, $value2, $message = '')`    | Check that a value is less than or equal to another
 `range($value, $min, $max, $message = '')`      | Check that a value is within a range
-`oneOf($value, array $values, $message = '')`   | Check that a value is one of a list of values
+`inArray($value, array $values, $message = '')` | Check that a value is one of a list of values
+`oneOf($value, array $values, $message = '')`   | Check that a value is one of a list of values (alias of `inArray`)
 
 ### String Assertions
 
diff --git a/src/Assert.php b/src/Assert.php
index 7b58f9d1..05970a71 100644
--- a/src/Assert.php
+++ b/src/Assert.php
@@ -70,6 +70,7 @@
  * @method static void nullOrLessThanEq($value, $limit, $message = '')
  * @method static void nullOrRange($value, $min, $max, $message = '')
  * @method static void nullOrOneOf($value, $values, $message = '')
+ * @method static void nullOrInArray($value, $values, $message = '')
  * @method static void nullOrContains($value, $subString, $message = '')
  * @method static void nullOrNotContains($value, $subString, $message = '')
  * @method static void nullOrNotWhitespaceOnly($value, $message = '')
@@ -161,6 +162,7 @@
  * @method static void allLessThanEq($values, $limit, $message = '')
  * @method static void allRange($values, $min, $max, $message = '')
  * @method static void allOneOf($values, $values, $message = '')
+ * @method static void allInArray($values, $values, $message = '')
  * @method static void allContains($values, $subString, $message = '')
  * @method static void allNotContains($values, $subString, $message = '')
  * @method static void allNotWhitespaceOnly($values, $message = '')
@@ -1104,7 +1106,7 @@ public static function range($value, $min, $max, $message = '')
     }
 
     /**
-     * Does strict comparison, so Assert::oneOf(3, ['3']) does not pass the assertion.
+     * A more human-readable alias of Assert::inArray().
      *
      * @psalm-pure
      *
@@ -1115,6 +1117,22 @@ public static function range($value, $min, $max, $message = '')
      * @throws InvalidArgumentException
      */
     public static function oneOf($value, array $values, $message = '')
+    {
+        static::inArray($value, $values, $message);
+    }
+
+    /**
+     * Does strict comparison, so Assert::inArray(3, ['3']) does not pass the assertion.
+     *
+     * @psalm-pure
+     *
+     * @param mixed  $value
+     * @param array  $values
+     * @param string $message
+     *
+     * @throws InvalidArgumentException
+     */
+    public static function inArray($value, array $values, $message = '')
     {
         if (!\in_array($value, $values, true)) {
             static::reportInvalidArgument(\sprintf(
diff --git a/tests/AssertTest.php b/tests/AssertTest.php
index 49e9807e..a5ade77c 100644
--- a/tests/AssertTest.php
+++ b/tests/AssertTest.php
@@ -224,6 +224,8 @@ public function getTests()
             array('range', array(3, 1, 2), false),
             array('oneOf', array(1, array(1, 2, 3)), true),
             array('oneOf', array(1, array('1', '2', '3')), false),
+            array('inArray', array(1, array(1, 2, 3)), true),
+            array('inArray', array(1, array('1', '2', '3')), false),
             array('contains', array('abcd', 'ab'), true),
             array('contains', array('abcd', 'bc'), true),
             array('contains', array('abcd', 'cd'), true),