diff --git a/README.md b/README.md
index cd17da9..d85a3c7 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 **Tags:** cache, plugin, redis  
 **Requires at least:** 3.0.1  
 **Tested up to:** 5.8  
-**Stable tag:** 1.1.3  
+**Stable tag:** 1.1.4  
 **License:** GPLv2 or later  
 **License URI:** http://www.gnu.org/licenses/gpl-2.0.html  
 
@@ -116,6 +116,9 @@ There's a known issue with WordPress `alloptions` cache design. Specifically, a
 
 ## Changelog ##
 
+### 1.1.4 (October 21, 2021) ###
+* Fixes some faulty logic in `WP_REDIS_IGNORE_GLOBAL_GROUPS` check [[#333](https://github.com/pantheon-systems/wp-redis/pull/333)].
+
 ### 1.1.3 (October 21, 2021) ###
 * Supports a `WP_REDIS_IGNORE_GLOBAL_GROUPS` constant to prevent groups from being added to global caching group [[#331](https://github.com/pantheon-systems/wp-redis/pull/331)].
 
diff --git a/object-cache.php b/object-cache.php
index 6122418..641ed44 100644
--- a/object-cache.php
+++ b/object-cache.php
@@ -434,11 +434,11 @@ public function add( $key, $data, $group = 'default', $expire = WP_REDIS_DEFAULT
 	public function add_global_groups( $groups ) {
 		$groups = (array) $groups;
 
-                // Filter global groups
+		// Allow force ignoring of global groups.
 		if ( is_array( WP_REDIS_IGNORE_GLOBAL_GROUPS ) ) {
-                	$groups = array_diff_key( $groups, WP_REDIS_IGNORE_GLOBAL_GROUPS );
+			$groups = array_diff( $groups, WP_REDIS_IGNORE_GLOBAL_GROUPS );
 		}
-		
+
 		$groups              = array_fill_keys( $groups, true );
 		$this->global_groups = array_merge( $this->global_groups, $groups );
 	}
diff --git a/readme.txt b/readme.txt
index f89d469..782f22f 100644
--- a/readme.txt
+++ b/readme.txt
@@ -3,7 +3,7 @@ Contributors: getpantheon, danielbachhuber, mboynes, Outlandish Josh
 Tags: cache, plugin, redis
 Requires at least: 3.0.1
 Tested up to: 5.8
-Stable tag: 1.1.3
+Stable tag: 1.1.4
 License: GPLv2 or later
 License URI: http://www.gnu.org/licenses/gpl-2.0.html
 
@@ -116,6 +116,9 @@ There's a known issue with WordPress `alloptions` cache design. Specifically, a
 
 == Changelog ==
 
+= 1.1.4 (October 21, 2021) =
+* Fixes some faulty logic in `WP_REDIS_IGNORE_GLOBAL_GROUPS` check [[#333](https://github.com/pantheon-systems/wp-redis/pull/333)].
+
 = 1.1.3 (October 21, 2021) =
 * Supports a `WP_REDIS_IGNORE_GLOBAL_GROUPS` constant to prevent groups from being added to global caching group [[#331](https://github.com/pantheon-systems/wp-redis/pull/331)].
 
diff --git a/tests/phpunit/bootstrap.php b/tests/phpunit/bootstrap.php
index ead560b..ac7b0c8 100644
--- a/tests/phpunit/bootstrap.php
+++ b/tests/phpunit/bootstrap.php
@@ -21,6 +21,8 @@
 	define( 'WP_REDIS_USE_CACHE_GROUPS', true );
 }
 
+define( 'WP_REDIS_IGNORE_GLOBAL_GROUPS', array( 'wp-redis-ignored-group' ) );
+
 // Easiest way to get this to where WordPress will load it
 copy( dirname( dirname( dirname( __FILE__ ) ) ) . '/object-cache.php', $_core_dir . '/wp-content/object-cache.php' );
 
diff --git a/tests/phpunit/test-cache.php b/tests/phpunit/test-cache.php
index 3cebac1..d7314ec 100644
--- a/tests/phpunit/test-cache.php
+++ b/tests/phpunit/test-cache.php
@@ -1377,6 +1377,13 @@ public function test_wp_cache_replace() {
 		$this->assertFalse( wp_cache_get( $fake_key ) );
 	}
 
+	public function test_ignore_global_groups() {
+		$this->cache->add_global_groups( array( 'wp-redis-respected-group' ) );
+		$this->assertTrue( isset( $this->cache->global_groups['wp-redis-respected-group'] ) );
+		$this->cache->add_global_groups( array( 'wp-redis-ignored-group' ) );
+		$this->assertFalse( isset( $this->cache->global_groups['wp-redis-ignored-group'] ) );
+	}
+
 	public function test_wp_redis_get_info() {
 		if ( ! class_exists( 'Redis' ) ) {
 			$this->markTestSkipped( 'PHPRedis extension not available.' );
diff --git a/wp-redis.php b/wp-redis.php
index 092861d..fbe7439 100644
--- a/wp-redis.php
+++ b/wp-redis.php
@@ -3,7 +3,7 @@
  * Plugin Name: WP Redis
  * Plugin URI: http://github.com/pantheon-systems/wp-redis/
  * Description: WordPress Object Cache using Redis. Requires the PhpRedis extension (https://github.com/phpredis/phpredis).
- * Version: 1.1.3
+ * Version: 1.1.4
  * Author: Pantheon, Josh Koenig, Matthew Boynes, Daniel Bachhuber, Alley Interactive
  * Author URI: https://pantheon.io/
  */