diff --git a/plugins/scheduler-k3s/go.mod b/plugins/scheduler-k3s/go.mod
index 182d156be..54394039c 100644
--- a/plugins/scheduler-k3s/go.mod
+++ b/plugins/scheduler-k3s/go.mod
@@ -4,7 +4,7 @@ go 1.25.5
 
 require (
 	github.com/Masterminds/semver/v3 v3.4.0
-	github.com/cert-manager/cert-manager v1.19.2
+	github.com/cert-manager/cert-manager v1.19.3
 	github.com/dokku/dokku/plugins/app-json v0.0.0-20250618161309-8d0c35f1333c
 	github.com/dokku/dokku/plugins/common v0.0.0-20250618161309-8d0c35f1333c
 	github.com/dokku/dokku/plugins/config v0.0.0-20250618161309-8d0c35f1333c
diff --git a/plugins/scheduler-k3s/go.sum b/plugins/scheduler-k3s/go.sum
index ff10b2df5..f6b3e5a3f 100644
--- a/plugins/scheduler-k3s/go.sum
+++ b/plugins/scheduler-k3s/go.sum
@@ -36,8 +36,8 @@ github.com/cenkalti/backoff/v4 v4.3.0 h1:MyRJ/UdXutAwSAT+s3wNd7MfTIcy71VQueUuFK3
 github.com/cenkalti/backoff/v4 v4.3.0/go.mod h1:Y3VNntkOUPxTVeUxJ/G5vcM//AlwfmyYozVcomhLiZE=
 github.com/cenkalti/backoff/v5 v5.0.3 h1:ZN+IMa753KfX5hd8vVaMixjnqRZ3y8CuJKRKj1xcsSM=
 github.com/cenkalti/backoff/v5 v5.0.3/go.mod h1:rkhZdG3JZukswDf7f0cwqPNk4K0sa+F97BxZthm/crw=
-github.com/cert-manager/cert-manager v1.19.2 h1:jSprN1h5pgNDSl7HClAmIzXuTxic/5FXJ32kbQHqjlM=
-github.com/cert-manager/cert-manager v1.19.2/go.mod h1:e9NzLtOKxTw7y99qLyWGmPo6mrC1Nh0EKKcMkRfK+GE=
+github.com/cert-manager/cert-manager v1.19.3 h1:3d0Nk/HO3BOmAdBJNaBh+6YgaO3Ciey3xCpOjiX5Obs=
+github.com/cert-manager/cert-manager v1.19.3/go.mod h1:e9NzLtOKxTw7y99qLyWGmPo6mrC1Nh0EKKcMkRfK+GE=
 github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
 github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/chai2010/gettext-go v1.0.3 h1:9liNh8t+u26xl5ddmWLmsOsdNLwkdRTg5AG+JnTiM80=