diff --git a/memorystore/redis/requirements.txt b/memorystore/redis/requirements.txt
index 0280b5ab8e1..398e5c2d786 100644
--- a/memorystore/redis/requirements.txt
+++ b/memorystore/redis/requirements.txt
@@ -12,6 +12,6 @@
 # limitations under the License.
 # [START memorystore_requirements]
 Flask==1.1.1
-gunicorn==20.0.4
+gunicorn==22.0.0
 redis==3.3.11
 # [END memorystore_requirements]