diff --git a/content/da/docs/monitoring-options.md b/content/da/docs/monitoring-options.md
index 91e9197a0..8efe05aae 100644
--- a/content/da/docs/monitoring-options.md
+++ b/content/da/docs/monitoring-options.md
@@ -1,7 +1,7 @@
 ---
 title: Indstillinger For Overvågningstjeneste
 slug: monitoring-options
-lastmod: 2025-12-09
+lastmod: 2026-06-01
 show_lastmod: 1
 ---
 
@@ -18,6 +18,7 @@ Der er en række andre overvågningsmuligheder derude, herunder:
 - [Host-Tracker](https://www.host-tracker.com/)
 - [HeyOnCall](https://heyoncall.com/guides/ssl-certificate-expiration-monitoring) (selvhostede scripts)
 - [CertKit](https://www.certkit.io/)
+- [Otterwatch](https://otterwatch.dev)
 
 Bemærk venligst, at ingen af disse tjenester ikke er tilknyttet ISRG / Let's Encrypt.
 
diff --git a/content/de/docs/monitoring-options.md b/content/de/docs/monitoring-options.md
index 37a73f791..b4b02dd41 100644
--- a/content/de/docs/monitoring-options.md
+++ b/content/de/docs/monitoring-options.md
@@ -1,7 +1,7 @@
 ---
 title: Optionen zur Überwachung
 slug: monitoring-options
-lastmod: 2025-12-09
+lastmod: 2026-06-01
 show_lastmod: 1
 ---
 
@@ -18,6 +18,7 @@ Es gibt eine Reihe von Überwachungsoptionen, darunter:
 - [Host-Tracker](https://www.host-tracker.com/)
 - [HeyOnCall](https://heyoncall.com/guides/ssl-certificate-expiration-monitoring) (selbstgehostete Skripte)
 - [CertKit](https://www.certkit.io/)
+- [Otterwatch](https://otterwatch.dev)
 
 Bitte beachten Sie, dass alle diese Dienste in keiner Verbindung zur ISRG / Let's Encrypt stehen.
 
diff --git a/content/en/docs/monitoring-options.md b/content/en/docs/monitoring-options.md
index bfbba95ca..b6fd10d65 100644
--- a/content/en/docs/monitoring-options.md
+++ b/content/en/docs/monitoring-options.md
@@ -1,7 +1,7 @@
 ---
 title: Monitoring Service Options
 slug: monitoring-options
-lastmod: 2025-12-09
+lastmod: 2026-06-01
 show_lastmod: 1
 ---
 
@@ -18,6 +18,7 @@ There are a number of monitoring options out there, including:
 * [Host-Tracker](https://www.host-tracker.com/)
 * [HeyOnCall](https://heyoncall.com/guides/ssl-certificate-expiration-monitoring) (self-hosted scripts)
 * [CertKit](https://www.certkit.io/)
+* [Otterwatch](https://otterwatch.dev)
 
 Please note that all of these services are unaffiliated with ISRG / Let's Encrypt.
 
diff --git a/content/fr/docs/monitoring-options.md b/content/fr/docs/monitoring-options.md
index 8d60da02d..f2977299b 100644
--- a/content/fr/docs/monitoring-options.md
+++ b/content/fr/docs/monitoring-options.md
@@ -1,7 +1,7 @@
 ---
 title: Options du service de surveillance
 slug: monitoring-options
-lastmod: 2025-12-09
+lastmod: 2026-06-01
 show_lastmod: 1
 ---
 
@@ -17,6 +17,7 @@ Il existe un certain nombre d'options de surveillance, notamment :
 - [TrackSSL](https://trackssl.com/)
 - [Host-Tracker](https://www.host-tracker.com/)
 - [CertKit](https://www.certkit.io/)
+- [Otterwatch](https://otterwatch.dev)
 
 Veuillez noter que tous ces services ne sont pas affiliés à ISRG / Let's Encrypt.
 
diff --git a/content/he/docs/monitoring-options.md b/content/he/docs/monitoring-options.md
index b983fd0f2..48706eede 100644
--- a/content/he/docs/monitoring-options.md
+++ b/content/he/docs/monitoring-options.md
@@ -1,7 +1,7 @@
 ---
 title: אפשרויות שירותי מעקב
 slug: monitoring-options
-lastmod: 2025-12-09
+lastmod: 2026-06-01
 show_lastmod: 1
 ---
 
@@ -18,6 +18,7 @@ show_lastmod: 1
 - [Host-Tracker](https://www.host-tracker.com/)
 - [HeyOnCall](https://heyoncall.com/guides/ssl-certificate-expiration-monitoring) (סקריפטים באירוח עצמי)
 - [CertKit](https://www.certkit.io/)
+- [Otterwatch](https://otterwatch.dev)
 
 נא לשים לב שכל השירותים האלה אינם קשורים ל־ISRG / Let's Encrypt.
 
diff --git a/content/zh-cn/docs/monitoring-options.md b/content/zh-cn/docs/monitoring-options.md
index bbf9f5d82..8937b6301 100644
--- a/content/zh-cn/docs/monitoring-options.md
+++ b/content/zh-cn/docs/monitoring-options.md
@@ -1,7 +1,7 @@
 ---
 title: 可供选择的证书监测服务
 slug: monitoring-options
-lastmod: 2025-12-09
+lastmod: 2026-06-01
 show_lastmod: 1
 ---
 
@@ -18,6 +18,7 @@ Let’s Encrypt 较为推荐的服务是 [Red Sift Certificates Lite](https://re
 - [Host-Tracker](https://www.host-tracker.com/)
 - [HeyOnCall](https://heyoncall.com/guides/ssl-certificate-expiration-monitoring)（可自行部署脚本）
 - [CertKit](https://www.certkit.io/)
+- [Otterwatch](https://otterwatch.dev)
 
 请注意，以上服务均由第三方提供，与 ISRG / Let's Encrypt 无关。