diff --git a/.circleci/config.yml b/.circleci/config.yml
index 8c8f08f1754..7fa2a47aa50 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -5,7 +5,7 @@ jobs:
     resource_class: arm.medium
     docker:
       - image: cimg/base:current-24.04
-      - 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 423fe39bdc4..97064ad3972 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -138,7 +138,7 @@ jobs:
   LINUX_X64:
     services:
       mysql:
-        image: mysql:8.3
+        image: mysql:8.4
         ports:
           - 3306:3306
         env:
@@ -277,7 +277,7 @@ jobs:
       PDO_FIREBIRD_TEST_DSN: firebird:dbname=firebird:test.fdb
     services:
       mysql:
-        image: mysql:8.3
+        image: mysql:8.4
         ports:
           - 3306:3306
         env:
@@ -406,7 +406,7 @@ jobs:
     if: inputs.branch == 'master'
     services:
       mysql:
-        image: mysql:8.3
+        image: mysql:8.4
         ports:
           - 3306:3306
         env:
@@ -652,7 +652,7 @@ 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 d2f3587aef8..4f1c53c0230 100644
--- a/.github/workflows/push.yml
+++ b/.github/workflows/push.yml
@@ -76,7 +76,7 @@ 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:
@@ -182,7 +182,7 @@ jobs:
       PDO_FIREBIRD_TEST_DSN: firebird:dbname=firebird:test.fdb
     services:
       mysql:
-        image: mysql:8.3
+        image: mysql:8.4
         ports:
           - 3306:3306
         env: