diff --git a/.github/workflows/tests_with_mysql.yml b/.github/workflows/tests_with_mysql.yml
index 69aa296..b26cc07 100644
--- a/.github/workflows/tests_with_mysql.yml
+++ b/.github/workflows/tests_with_mysql.yml
@@ -24,7 +24,7 @@ jobs:
           MYSQL_USER: root
           MYSQL_PASSWORD: 'BestPasswordEver'
         ports:
-          - 3306:3306
+          - 33306:3306
         options: >-
           --health-cmd="mysqladmin ping"
           --health-interval=10s
diff --git a/test/support/database-mysql.yml b/test/support/database-mysql.yml
index c3b42ef..9c60485 100644
--- a/test/support/database-mysql.yml
+++ b/test/support/database-mysql.yml
@@ -2,7 +2,7 @@ production:
   adapter: mysql2
   database: redmine
   host: 127.0.0.1
-  port: 3306
+  port: 33306
   username: root
   password: BestPasswordEver
   encoding: utf8mb4
@@ -10,7 +10,7 @@ production:
 development:
   adapter: mysql2
   database: redmine
-  port: 3306
+  port: 33306
   host: 127.0.0.1
   username: root
   password: BestPasswordEver
@@ -19,7 +19,7 @@ development:
 test:
   adapter: mysql2
   database: redmine
-  port: 3306
+  port: 33306
   host: 127.0.0.1
   username: root
   password: BestPasswordEver