diff --git a/seichi-onp-k8s/manifests/seichi-kubernetes/apps/seichi-debug-gateway/bungeecord/bungeesemaphore-redis.yaml b/seichi-onp-k8s/manifests/seichi-kubernetes/apps/seichi-debug-gateway/bungeecord/bungeesemaphore-redis.yaml
index 9fa5b061b..330cd7934 100644
--- a/seichi-onp-k8s/manifests/seichi-kubernetes/apps/seichi-debug-gateway/bungeecord/bungeesemaphore-redis.yaml
+++ b/seichi-onp-k8s/manifests/seichi-kubernetes/apps/seichi-debug-gateway/bungeecord/bungeesemaphore-redis.yaml
@@ -8,7 +8,7 @@ spec:
   source:
     chart: redis
     repoURL: https://charts.bitnami.com/bitnami
-    targetRevision: 18.19.2
+    targetRevision: 20.4.0
     helm:
       releaseName: seichi-debug-bungeesemaphore-redis
       values: |
diff --git a/seichi-onp-k8s/manifests/seichi-kubernetes/apps/seichi-debug-gateway/bungeecord/redisbungee-redis.yaml b/seichi-onp-k8s/manifests/seichi-kubernetes/apps/seichi-debug-gateway/bungeecord/redisbungee-redis.yaml
index 4069087ff..487c83143 100644
--- a/seichi-onp-k8s/manifests/seichi-kubernetes/apps/seichi-debug-gateway/bungeecord/redisbungee-redis.yaml
+++ b/seichi-onp-k8s/manifests/seichi-kubernetes/apps/seichi-debug-gateway/bungeecord/redisbungee-redis.yaml
@@ -8,7 +8,7 @@ spec:
   source:
     chart: redis
     repoURL: https://charts.bitnami.com/bitnami
-    targetRevision: 18.19.2
+    targetRevision: 20.4.0
     helm:
       releaseName: seichi-debug-redisbungee-redis
       values: |
diff --git a/seichi-onp-k8s/manifests/seichi-kubernetes/apps/seichi-minecraft/redis/bungeesemaphore-redis.yaml b/seichi-onp-k8s/manifests/seichi-kubernetes/apps/seichi-minecraft/redis/bungeesemaphore-redis.yaml
index 2e02f34d1..41158dca2 100644
--- a/seichi-onp-k8s/manifests/seichi-kubernetes/apps/seichi-minecraft/redis/bungeesemaphore-redis.yaml
+++ b/seichi-onp-k8s/manifests/seichi-kubernetes/apps/seichi-minecraft/redis/bungeesemaphore-redis.yaml
@@ -8,7 +8,7 @@ spec:
   source:
     chart: redis
     repoURL: https://charts.bitnami.com/bitnami
-    targetRevision: 18.19.2
+    targetRevision: 20.4.0
     helm:
       releaseName: seichi-bungeesemaphore-redis
       values: |
diff --git a/seichi-onp-k8s/manifests/seichi-kubernetes/apps/seichi-minecraft/redis/redisbungee-redis.yaml b/seichi-onp-k8s/manifests/seichi-kubernetes/apps/seichi-minecraft/redis/redisbungee-redis.yaml
index ef985e959..82c05e062 100644
--- a/seichi-onp-k8s/manifests/seichi-kubernetes/apps/seichi-minecraft/redis/redisbungee-redis.yaml
+++ b/seichi-onp-k8s/manifests/seichi-kubernetes/apps/seichi-minecraft/redis/redisbungee-redis.yaml
@@ -8,7 +8,7 @@ spec:
   source:
     chart: redis
     repoURL: https://charts.bitnami.com/bitnami
-    targetRevision: 18.19.2
+    targetRevision: 20.4.0
     helm:
       releaseName: seichi-redisbungee-redis
       values: |