diff --git a/charts/vald/values/agent-ngt-standalone.yaml b/charts/vald/values/agent-ngt-standalone.yaml
index 66fde669f6..2126d582d5 100644
--- a/charts/vald/values/agent-ngt-standalone.yaml
+++ b/charts/vald/values/agent-ngt-standalone.yaml
@@ -16,7 +16,7 @@
 
 defaults:
   image:
-    tag: latest
+    tag: nightly
 agent:
   ngt:
     auto_index_duration_limit: 30m
diff --git a/charts/vald/values/vald-backup-via-pv-and-s3.yaml b/charts/vald/values/vald-backup-via-pv-and-s3.yaml
index 36d6f3267a..0e4c635a4f 100644
--- a/charts/vald/values/vald-backup-via-pv-and-s3.yaml
+++ b/charts/vald/values/vald-backup-via-pv-and-s3.yaml
@@ -15,7 +15,7 @@
 #
 defaults:
   image:
-    tag: latest
+    tag: nightly
 
 gateway:
   lb:
diff --git a/charts/vald/values/vald-backup-via-pv.yaml b/charts/vald/values/vald-backup-via-pv.yaml
index 89f31a38fd..bf83930f5a 100644
--- a/charts/vald/values/vald-backup-via-pv.yaml
+++ b/charts/vald/values/vald-backup-via-pv.yaml
@@ -15,7 +15,7 @@
 #
 defaults:
   image:
-    tag: latest
+    tag: nightly
 gateway:
   lb:
     resources:
diff --git a/charts/vald/values/vald-backup-via-s3.yaml b/charts/vald/values/vald-backup-via-s3.yaml
index 4bb143cbba..284c78ccfa 100644
--- a/charts/vald/values/vald-backup-via-s3.yaml
+++ b/charts/vald/values/vald-backup-via-s3.yaml
@@ -15,7 +15,7 @@
 #
 defaults:
   image:
-    tag: latest
+    tag: nightly
 
 gateway:
   lb:
diff --git a/charts/vald/values/vald-in-memory-mode-no-backup.yaml b/charts/vald/values/vald-in-memory-mode-no-backup.yaml
index a42e0880a0..4f91bb0abd 100644
--- a/charts/vald/values/vald-in-memory-mode-no-backup.yaml
+++ b/charts/vald/values/vald-in-memory-mode-no-backup.yaml
@@ -15,7 +15,7 @@
 #
 defaults:
   image:
-    tag: latest
+    tag: nightly
 gateway:
   lb:
     resources:
diff --git a/example/helm/values-standalone-agent-ngt.yaml b/example/helm/values-standalone-agent-ngt.yaml
index d797cdde7a..8ceb2f1c1e 100644
--- a/example/helm/values-standalone-agent-ngt.yaml
+++ b/example/helm/values-standalone-agent-ngt.yaml
@@ -18,7 +18,7 @@ default:
   logging:
     level: debug
   image:
-    tag: latest
+    tag: nightly
 agent:
   minReplicas: 4
   maxReplicas: 8
diff --git a/example/helm/values-with-pyroscope.yaml b/example/helm/values-with-pyroscope.yaml
index c428bda76e..882e38289e 100644
--- a/example/helm/values-with-pyroscope.yaml
+++ b/example/helm/values-with-pyroscope.yaml
@@ -18,7 +18,7 @@ defaults:
   logging:
     level: debug
   image:
-    tag: latest
+    tag: nightly
   time_zone: Asia/Tokyo
   server_config:
     metrics:
diff --git a/example/helm/values.yaml b/example/helm/values.yaml
index a845537436..8b292fbcaf 100644
--- a/example/helm/values.yaml
+++ b/example/helm/values.yaml
@@ -18,7 +18,7 @@ defaults:
   logging:
     level: debug
   image:
-    tag: latest
+    tag: nightly
   server_config:
     healths:
       liveness: