diff --git a/bin/update_charts b/bin/update_charts
index 91daf1f..b35ad1e 100755
--- a/bin/update_charts
+++ b/bin/update_charts
@@ -1,5 +1,7 @@
 #!/usr/bin/env bash
 
+date_darwin="-Iseconds"
+date_linux="--iso-8601=seconds"
 release_files=$(grep -Rl "k8s_.*_release:" defaults/)
 for file in $release_files; do
     ref_versions=$(grep --no-filename "k8s_.*_release:" "$file" | cut -d':' -f 1)
@@ -32,7 +34,11 @@ for file in $chart_files; do
             helm repo update >/dev/null 2>&1
             version=$(helm search repo "$chart/$chart" -o json | jq '.[0].version' -r)
             tmp="$(mktemp)"
-            timestamp=$(date --iso-8601=seconds)
+            if [[ "$OSTYPE" == "linux-gnu"* ]]; then
+                timestamp=$(date $date_linux)
+            elif [[ "$OSTYPE" == "darwin"* ]]; then
+                timestamp=$(date $date_darwin)
+            fi
             # shellcheck disable=SC2016
             yq eval-all '. as $item ireduce ({}; . * $item)' \
                 "$file" \
diff --git a/defaults/main/argocd.yml b/defaults/main/argocd.yml
index f1f57b2..ea7328f 100644
--- a/defaults/main/argocd.yml
+++ b/defaults/main/argocd.yml
@@ -8,8 +8,8 @@ k8s_argocd_exec_timeout: "3m"
 k8s_argocd_chart:
   name: "argo-cd"
   repo: "https://argoproj.github.io/argo-helm"
-  release: "6.7.14"
-  last_checked: "2024-04-23T22:53:28-06:00"
+  release: "7.3.4"
+  last_checked: "2024-07-09T16:00:20-05:00"
 k8s_argocd_chart_values:
   redis-ha:
     enabled: false
@@ -31,7 +31,7 @@ k8s_argocd_apps_chart:
   name: "argocd-apps"
   repo: "https://argoproj.github.io/argo-helm"
   release: "2.0.0"
-  last_checked: "2024-04-23T22:53:35-06:00"
+  last_checked: "2024-07-09T16:00:25-05:00"
 k8s_argocd_apps_chart_values:
   applications: []
   applicationsets: []
diff --git a/defaults/main/certmanager.yml b/defaults/main/certmanager.yml
index 770a5bc..9a92ced 100644
--- a/defaults/main/certmanager.yml
+++ b/defaults/main/certmanager.yml
@@ -4,7 +4,7 @@ k8s_certmanager_namespace: "cert-manager"
 k8s_certmanager_chart:
   name: "cert-manager"
   repo: "https://charts.jetstack.io"
-  release: "v1.14.4"
-  last_checked: "2024-04-23T22:52:57-06:00"
+  release: "v1.15.1"
+  last_checked: "2024-07-09T16:00:35-05:00"
 k8s_certmanager_wait_timeout: "{{ k8s_wait_timeout }}"
 k8s_certmanager_cacert: "/usr/share/ca-certificates/{{ k8s_cluster_name }}.crt"
diff --git a/defaults/main/longhorn.yml b/defaults/main/longhorn.yml
index 8dcebec..7073891 100644
--- a/defaults/main/longhorn.yml
+++ b/defaults/main/longhorn.yml
@@ -6,8 +6,8 @@ k8s_longhorn_wait_timeout: "{{ k8s_wait_timeout }}"
 k8s_longhorn_chart:
   name: longhorn
   repo: "https://charts.longhorn.io"
-  release: "1.6.1"
-  last_checked: "2024-04-23T22:53:22-06:00"
+  release: "1.6.2"
+  last_checked: "2024-07-09T16:01:01-05:00"
 k8s_longhorn_chart_values:
   persistence:
     defaultClass: false
diff --git a/defaults/main/metallb.yml b/defaults/main/metallb.yml
index 786b94d..0bd2e3e 100644
--- a/defaults/main/metallb.yml
+++ b/defaults/main/metallb.yml
@@ -3,6 +3,6 @@ k8s_metallb_namespace: "metallb-system"
 k8s_metallb_chart:
   name: "metallb"
   repo: "https://charts.bitnami.com/bitnami"
-  release: "6.1.2"
-  last_checked: "2024-04-23T22:53:48-06:00"
+  release: "6.3.7"
+  last_checked: "2024-07-09T16:00:30-05:00"
 k8s_metallb_wait_timeout: "{{ k8s_wait_timeout }}"
diff --git a/defaults/main/mysql.yml b/defaults/main/mysql.yml
index fa597ad..0786ecf 100644
--- a/defaults/main/mysql.yml
+++ b/defaults/main/mysql.yml
@@ -6,5 +6,5 @@ k8s_mysql_wait_timeout: "{{ k8s_wait_timeout }}"
 k8s_mysql_chart:
   name: "mysql-operator"
   repo: "https://mysql.github.io/mysql-operator"
-  release: "2.1.3"
-  last_checked: "2024-05-02T11:13:05-05:00"
+  release: "2.2.0"
+  last_checked: "2024-07-09T16:00:45-05:00"
diff --git a/defaults/main/nginx.yml b/defaults/main/nginx.yml
index 5f7b121..ad104f5 100644
--- a/defaults/main/nginx.yml
+++ b/defaults/main/nginx.yml
@@ -5,6 +5,6 @@ k8s_nginx_namespace: "nginx"
 k8s_nginx_chart:
   name: "ingress-nginx"
   repo: "https://kubernetes.github.io/ingress-nginx"
-  release: "4.10.0"
-  last_checked: "2024-04-23T22:53:16-06:00"
+  release: "4.11.0"
+  last_checked: "2024-07-09T16:00:40-05:00"
 k8s_nginx_wait_timeout: "{{ k8s_wait_timeout }}"
diff --git a/defaults/main/opensearch.yml b/defaults/main/opensearch.yml
index 43bc1b2..63d4d3c 100644
--- a/defaults/main/opensearch.yml
+++ b/defaults/main/opensearch.yml
@@ -4,7 +4,7 @@ k8s_opensearch_verify: "{{ k8s_opensearch_deploy }}"
 k8s_opensearch_chart:
   name: "opensearch-operator"
   repo: "https://opensearch-project.github.io/opensearch-k8s-operator"
-  release: "2.4.0"
-  last_checked: "2024-04-23T11:38:48-06:00"
+  release: "2.6.1"
+  last_checked: "2024-07-09T16:01:16-05:00"
 k8s_opensearch_namespace: opensearch
 k8s_opensearch_wait_timeout: "{{ k8s_wait_timeout }}"
diff --git a/defaults/main/reflector.yml b/defaults/main/reflector.yml
index 00e2899..e544cf6 100644
--- a/defaults/main/reflector.yml
+++ b/defaults/main/reflector.yml
@@ -4,6 +4,6 @@ k8s_reflector_namespace: "kube-system"
 k8s_reflector_chart:
   name: "reflector"
   repo: "https://emberstack.github.io/helm-charts"
-  release: "7.1.262"
-  last_checked: "2024-04-23T22:52:49-06:00"
+  release: "7.1.288"
+  last_checked: "2024-07-09T16:01:06-05:00"
 k8s_reflector_wait_timeout: "{{ k8s_wait_timeout }}"
diff --git a/defaults/main/sealedsecrets.yml b/defaults/main/sealedsecrets.yml
index 9aad58c..16dc0f6 100644
--- a/defaults/main/sealedsecrets.yml
+++ b/defaults/main/sealedsecrets.yml
@@ -5,8 +5,8 @@ k8s_sealedsecrets_namespace: "kube-system"
 k8s_sealedsecrets_chart:
   name: "sealed-secrets"
   repo: "https://bitnami-labs.github.io/sealed-secrets"
-  release: "2.15.3"
-  last_checked: "2024-04-23T22:52:36-06:00"
+  release: "2.16.0"
+  last_checked: "2024-07-09T16:00:55-05:00"
 k8s_sealedsecrets_wait_timeout: "{{ k8s_wait_timeout }}"
 k8s_sealedsecrets_values:
   fullnameOverride: sealed-secrets-controller
diff --git a/defaults/main/zalando.yml b/defaults/main/zalando.yml
index fc56068..ce5f3c6 100644
--- a/defaults/main/zalando.yml
+++ b/defaults/main/zalando.yml
@@ -8,5 +8,5 @@ k8s_zalando_secret_template: "{username}-{cluster}"
 k8s_zalando_chart:
   name: "postgres-operator"
   repo: "https://opensource.zalando.com/postgres-operator/charts/postgres-operator"
-  release: "1.11.0"
-  last_checked: "2024-04-23T22:52:43-06:00"
+  release: "1.12.2"
+  last_checked: "2024-07-09T16:01:22-05:00"