diff --git a/seichi-onp-k8s/manifests/seichi-kubernetes/app-templates/seichi-debug-minecraft-on-seichiassist-pr/templates/mariadb/mariadb.yaml b/seichi-onp-k8s/manifests/seichi-kubernetes/app-templates/seichi-debug-minecraft-on-seichiassist-pr/templates/mariadb/mariadb.yaml
index e954658cb..0f9793d44 100644
--- a/seichi-onp-k8s/manifests/seichi-kubernetes/app-templates/seichi-debug-minecraft-on-seichiassist-pr/templates/mariadb/mariadb.yaml
+++ b/seichi-onp-k8s/manifests/seichi-kubernetes/app-templates/seichi-debug-minecraft-on-seichiassist-pr/templates/mariadb/mariadb.yaml
@@ -31,7 +31,7 @@ spec:
 
   metrics:
     exporter:
-      image: prom/mysqld-exporter:v0.15.0
+      image: prom/mysqld-exporter:v0.14.0
       resources:
         requests:
           cpu: 50m
diff --git a/seichi-onp-k8s/manifests/seichi-kubernetes/apps/seichi-debug-minecraft/mariadb/mariadb.yaml b/seichi-onp-k8s/manifests/seichi-kubernetes/apps/seichi-debug-minecraft/mariadb/mariadb.yaml
index 45ec80698..2db54ec32 100644
--- a/seichi-onp-k8s/manifests/seichi-kubernetes/apps/seichi-debug-minecraft/mariadb/mariadb.yaml
+++ b/seichi-onp-k8s/manifests/seichi-kubernetes/apps/seichi-debug-minecraft/mariadb/mariadb.yaml
@@ -49,7 +49,7 @@ spec:
 
   metrics:
     exporter:
-      image: prom/mysqld-exporter:v0.15.0
+      image: prom/mysqld-exporter:v0.14.0
       resources:
         requests:
           cpu: 50m
diff --git a/seichi-onp-k8s/manifests/seichi-kubernetes/apps/seichi-minecraft/mariadb/mariadb.yaml b/seichi-onp-k8s/manifests/seichi-kubernetes/apps/seichi-minecraft/mariadb/mariadb.yaml
index 95cf4b03f..b65022ac3 100644
--- a/seichi-onp-k8s/manifests/seichi-kubernetes/apps/seichi-minecraft/mariadb/mariadb.yaml
+++ b/seichi-onp-k8s/manifests/seichi-kubernetes/apps/seichi-minecraft/mariadb/mariadb.yaml
@@ -49,7 +49,7 @@ spec:
 
   metrics:
     exporter:
-      image: prom/mysqld-exporter:v0.15.0
+      image: prom/mysqld-exporter:v0.14.0
       resources:
         requests:
           cpu: 300m