diff --git a/.github/workflows/query-engine.yml b/.github/workflows/query-engine.yml
index 7e131b481e0f..f5485dbcc035 100644
--- a/.github/workflows/query-engine.yml
+++ b/.github/workflows/query-engine.yml
@@ -58,19 +58,19 @@ jobs:
             connector: 'cockroachdb'
             version: '22.1'
           - name: 'mysql_5_6'
-            single_threaded: false
+            single_threaded: true
             connector: 'mysql'
             version: '5.6'
           - name: 'mysql_5_7'
-            single_threaded: false
+            single_threaded: true
             connector: 'mysql'
             version: '5.7'
           - name: 'mysql_8'
-            single_threaded: false
+            single_threaded: true
             connector: 'mysql'
             version: '8'
           - name: 'mysql_mariadb'
-            single_threaded: false
+            single_threaded: true
             connector: 'mysql'
             version: 'maria'
           - name: 'sqlite'