diff --git a/seichi-onp-k8s/manifests/seichi-kubernetes/apps/cluster-wide-apps/app-of-other-apps/seichi-debug-minecrafts-on-seichiassist-prs.yaml b/seichi-onp-k8s/manifests/seichi-kubernetes/apps/cluster-wide-apps/app-of-other-apps/seichi-debug-minecrafts-on-seichiassist-prs.yaml
index 6863f7652..ed30c596d 100644
--- a/seichi-onp-k8s/manifests/seichi-kubernetes/apps/cluster-wide-apps/app-of-other-apps/seichi-debug-minecrafts-on-seichiassist-prs.yaml
+++ b/seichi-onp-k8s/manifests/seichi-kubernetes/apps/cluster-wide-apps/app-of-other-apps/seichi-debug-minecrafts-on-seichiassist-prs.yaml
@@ -11,6 +11,7 @@ spec:
           repo: SeichiAssist
           labels:
             - ready-for-review
+          appSecretName: argocd-applicationset-controller-github-app-secret
         requeueAfterSeconds: 120
   template:
     metadata:
diff --git a/terraform/main.tf b/terraform/main.tf
index b6f613e91..7e0672c82 100644
--- a/terraform/main.tf
+++ b/terraform/main.tf
@@ -162,6 +162,26 @@ variable "onp_k8s_argocd_github_oauth_app_secret" {
   sensitive   = true
 }
 
+variable "onp_k8s_argocd_applicationset_controller_github_app_id" {
+  description = "App ID of the GitHub App used to avoid GitHub rate limit on the ApplicationSet Controller"
+  type        = string
+  sensitive   = true
+}
+
+# Found at
+# https://github.com/organizations/GiganticMinecraft/settings/installations/:installation_id
+variable "onp_k8s_argocd_applicationset_controller_github_app_installation_id" {
+  description = "Client installation ID of the GitHub App used to avoid GitHub rate limit on the ApplicationSet Controller"
+  type        = string
+  sensitive   = true
+}
+
+variable "onp_k8s_argocd_applicationset_controller_github_app_pem" {
+  description = "Client private key of the GitHub App used to avoid GitHub rate limit on the ApplicationSet Controller"
+  type        = string
+  sensitive   = true
+}
+
 #endregion
 
 #region on-premise Grafana to GitHub integration
diff --git a/terraform/onp_cluster_secrets.tf b/terraform/onp_cluster_secrets.tf
index 41c9499f6..d4d55be20 100644
--- a/terraform/onp_cluster_secrets.tf
+++ b/terraform/onp_cluster_secrets.tf
@@ -18,6 +18,30 @@ resource "kubernetes_secret" "onp_argocd_github_oauth_app_secret" {
   type = "Opaque"
 }
 
+resource "kubernetes_secret" "onp_argocd_applicationset_controller_github_app_secret" {
+  depends_on = [kubernetes_namespace.onp_argocd]
+
+  metadata {
+    name      = "argocd-applicationset-controller-github-app-secret"
+    namespace = "argocd"
+    labels = {
+      # seichi_infra 向けのアクセストークンであると決め打ちする　必要に応じて repo-creds にするなどすると良い
+      # repo-creds の詳細: https://argo-cd.readthedocs.io/en/stable/operator-manual/declarative-setup/#repository-credentials
+      "argocd.argoproj.io/secret-type" = "repository"
+    }
+  }
+
+  data = {
+    type = "git"
+    url = "https://github.com/GiganticMinecraft/seichi_infra"
+    githubAppID = var.onp_k8s_argocd_applicationset_controller_github_app_id
+    githubAppInstallationID = var.onp_k8s_argocd_applicationset_controller_github_app_installation_id
+    githubAppPrivateKey = var.onp_k8s_argocd_applicationset_controller_github_app_pem
+  }
+
+  type = "Opaque"
+}
+
 resource "kubernetes_secret" "onp_grafana_github_oauth_app_secret" {
   depends_on = [kubernetes_namespace.onp_monitoring]