diff --git a/.circleci/config.yml b/.circleci/config.yml
index 0ce68b36d9013..8ab588aa2e40b 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 1b1532af7f799..fee12de8300ea 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -137,7 +137,7 @@ jobs:
   LINUX_X64:
     services:
       mysql:
-        image: mysql:8.3
+        image: mysql:8.4
         ports:
           - 3306:3306
         env:
@@ -281,7 +281,7 @@ jobs:
       PDO_FIREBIRD_TEST_DSN: firebird:dbname=firebird:test.fdb
     services:
       mysql:
-        image: mysql:8.3
+        image: mysql:8.4
         ports:
           - 3306:3306
         env:
@@ -419,7 +419,7 @@ jobs:
     if: inputs.branch == 'master'
     services:
       mysql:
-        image: mysql:8.3
+        image: mysql:8.4
         ports:
           - 3306:3306
         env:
@@ -666,7 +666,7 @@ 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 2f82179b90ec6..e1e6c3093c02f 100644
--- a/.github/workflows/push.yml
+++ b/.github/workflows/push.yml
@@ -44,7 +44,7 @@ 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:
@@ -150,7 +150,7 @@ jobs:
       PDO_FIREBIRD_TEST_DSN: firebird:dbname=firebird:test.fdb
     services:
       mysql:
-        image: mysql:8.3
+        image: mysql:8.4
         ports:
           - 3306:3306
         env: