diff --git a/composer.json b/composer.json
index 3b639f3ec..8d47e94c7 100644
--- a/composer.json
+++ b/composer.json
@@ -26,7 +26,7 @@
     "require": {},
     "require-dev": {
         "behat/behat": "~2.5",
-        "wp-cli/wp-cli": "*",
+        "wp-cli/wp-cli": "^1.5",
         "phpunit/phpunit": "^4.8"
     },
     "extra": {
diff --git a/features/post.feature b/features/post.feature
index ab0bd1013..d7b1d3215 100644
--- a/features/post.feature
+++ b/features/post.feature
@@ -232,3 +232,23 @@ Feature: Manage WordPress posts
       """
       var isEmailValid = /^\S+@\S+.\S+$/.test(email);
       """
+
+  @require-wp-4.4
+  Scenario: Creating/updating posts with meta keys
+    When I run `wp post create --post_title='Test Post' --post_content='Test post content' --meta_input='{"key1":"value1","key2":"value2"}' --porcelain`
+    Then STDOUT should be a number
+    And save STDOUT as {POST_ID}
+
+    When I run `wp post meta list {POST_ID} --format=table`
+    Then STDOUT should be a table containing rows:
+      | post_id   | meta_key | meta_value |
+      | {POST_ID} | key1     | value1     |
+      | {POST_ID} | key2     | value2     |
+
+    When I run `wp post update {POST_ID} --meta_input='{"key2":"value2b","key3":"value3"}'`
+    And I run `wp post meta list {POST_ID} --format=table`
+    Then STDOUT should be a table containing rows:
+      | post_id   | meta_key | meta_value |
+      | {POST_ID} | key1     | value1     |
+      | {POST_ID} | key2     | value2b    |
+      | {POST_ID} | key3     | value3     |
diff --git a/src/Post_Command.php b/src/Post_Command.php
index 0641190a3..ad2351efc 100644
--- a/src/Post_Command.php
+++ b/src/Post_Command.php
@@ -112,7 +112,7 @@ public function __construct() {
 	 * : Array of taxonomy terms keyed by their taxonomy name. Default empty.
 	 *
 	 * [--meta_input=<meta_input>]
-	 * : Array of post meta values keyed by their post meta key. Default empty.
+	 * : Array in JSON format of post meta values keyed by their post meta key. Default empty.
 	 *
 	 * [<file>]
 	 * : Read post content from <file>. If this value is present, the
@@ -143,6 +143,10 @@ public function __construct() {
 	 *     # Create post with content from given file
 	 *     $ wp post create ./post-content.txt --post_category=201,345 --post_title='Post from file'
 	 *     Success: Created post 1922.
+	 *
+	 *     # Create a post with multiple meta values.
+	 *     $ wp post create --post_title='A post' --post_content='Just a small post.' --meta_input='{"key1":"value1","key2":"value2"}
+	 *     Success: Created post 1923.
 	 */
 	public function create( $args, $assoc_args ) {
 		if ( ! empty( $args[0] ) ) {
@@ -162,6 +166,9 @@ public function create( $args, $assoc_args ) {
 			$assoc_args['post_category'] = explode( ',', $assoc_args['post_category'] );
 		}
 
+		$array_arguments = array( 'meta_input' );
+		$assoc_args      = \WP_CLI\Utils\parse_shell_arrays( $assoc_args, $array_arguments );
+
 		$assoc_args = wp_slash( $assoc_args );
 		parent::_create( $args, $assoc_args, function ( $params ) {
 			return wp_insert_post( $params, true );
@@ -249,7 +256,7 @@ public function create( $args, $assoc_args ) {
 	 * : Array of taxonomy terms keyed by their taxonomy name. Default empty.
 	 *
 	 * [--meta_input=<meta_input>]
-	 * : Array of post meta values keyed by their post meta key. Default empty.
+	 * : Array in JSON format of post meta values keyed by their post meta key. Default empty.
 	 *
 	 * [<file>]
 	 * : Read post content from <file>. If this value is present, the
@@ -268,6 +275,10 @@ public function create( $args, $assoc_args ) {
 	 *
 	 *     $ wp post update 123 --post_name=something --post_status=draft
 	 *     Success: Updated post 123.
+	 *
+	 *     # Update a post with multiple meta values.
+	 *     $ wp post update 123 --meta_input='{"key1":"value1","key2":"value2"}
+	 *     Success: Updated post 123.
 	 */
 	public function update( $args, $assoc_args ) {
 
@@ -285,6 +296,9 @@ public function update( $args, $assoc_args ) {
 			$assoc_args['post_category'] = explode( ',', $assoc_args['post_category'] );
 		}
 
+		$array_arguments = array( 'meta_input' );
+		$assoc_args      = \WP_CLI\Utils\parse_shell_arrays( $assoc_args, $array_arguments );
+
 		$assoc_args = wp_slash( $assoc_args );
 		parent::_update( $args, $assoc_args, function ( $params ) {
 			return wp_update_post( $params, true );