diff --git a/.env.example b/.env.example
index 70cd4153b3757..55f78229c03af 100644
--- a/.env.example
+++ b/.env.example
@@ -51,7 +51,7 @@ LOCAL_DB_TYPE=mysql
 # When using `mysql`, see https://hub.docker.com/_/mysql for valid versions.
 # When using `mariadb`, see https://hub.docker.com/_/mariadb for valid versions.
 ##
-LOCAL_DB_VERSION=8.0
+LOCAL_DB_VERSION=8.4
 
 # Whether or not to enable multisite.
 LOCAL_MULTISITE=false
diff --git a/.github/workflows/reusable-phpunit-tests-v3.yml b/.github/workflows/reusable-phpunit-tests-v3.yml
index 03ec815460f55..a12dcdf17d58e 100644
--- a/.github/workflows/reusable-phpunit-tests-v3.yml
+++ b/.github/workflows/reusable-phpunit-tests-v3.yml
@@ -26,7 +26,7 @@ on:
         description: 'Database version'
         required: false
         type: 'string'
-        default: '8.0'
+        default: '8.4'
       multisite:
         description: 'Whether to run tests as multisite'
         required: false
diff --git a/.github/workflows/reusable-test-local-docker-environment-v1.yml b/.github/workflows/reusable-test-local-docker-environment-v1.yml
index 4dccd7ef3dccd..6e521de70dfa6 100644
--- a/.github/workflows/reusable-test-local-docker-environment-v1.yml
+++ b/.github/workflows/reusable-test-local-docker-environment-v1.yml
@@ -27,7 +27,7 @@ on:
         description: 'Database version'
         required: false
         type: 'string'
-        default: '8.0'
+        default: '8.4'
       memcached:
         description: 'Whether to enable memcached'
         required: false