diff --git a/.circleci/config.yml b/.circleci/config.yml
index f5dddad0931..10ac6c19726 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -5,7 +5,7 @@ jobs:
     resource_class: arm.medium
     docker:
       - image: cimg/base:current-22.04
-      - image: mysql:8.3
+      - image: mysql:8.4
         environment:
           MYSQL_ALLOW_EMPTY_PASSWORD: true
           MYSQL_ROOT_PASSWORD: ''
diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index af60219b52a..1a460abbf22 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -135,7 +135,7 @@ jobs:
   LINUX_X64:
     services:
       mysql:
-        image: mysql:8.3
+        image: mysql:8.4
         ports:
           - 3306:3306
         env:
@@ -274,7 +274,7 @@ jobs:
       PDO_FIREBIRD_TEST_DSN: firebird:dbname=firebird:test.fdb
     services:
       mysql:
-        image: mysql:8.3
+        image: mysql:8.4
         ports:
           - 3306:3306
         env:
@@ -403,7 +403,7 @@ jobs:
     if: inputs.branch == 'master'
     services:
       mysql:
-        image: mysql:8.3
+        image: mysql:8.4
         ports:
           - 3306:3306
         env:
@@ -649,7 +649,7 @@ jobs:
   OPCACHE_VARIATION:
     services:
       mysql:
-        image: mysql:8.3
+        image: mysql:8.4
         ports:
           - 3306:3306
         env:
diff --git a/.github/workflows/push.yml b/.github/workflows/push.yml
index 05cdff054c4..b37f66143a7 100644
--- a/.github/workflows/push.yml
+++ b/.github/workflows/push.yml
@@ -77,7 +77,7 @@ jobs:
     if: github.repository == 'php/php-src' || github.event_name == 'pull_request'
     services:
       mysql:
-        image: mysql:8.3
+        image: mysql:8.4
         ports:
           - 3306:3306
         env:
@@ -183,7 +183,7 @@ jobs:
       PDO_FIREBIRD_TEST_DSN: firebird:dbname=firebird:test.fdb
     services:
       mysql:
-        image: mysql:8.3
+        image: mysql:8.4
         ports:
           - 3306:3306
         env: