diff --git a/helm-charts/splunk-otel-collector/Chart.yaml b/helm-charts/splunk-otel-collector/Chart.yaml
index 524e2731a7..7bcb5ca04d 100644
--- a/helm-charts/splunk-otel-collector/Chart.yaml
+++ b/helm-charts/splunk-otel-collector/Chart.yaml
@@ -23,7 +23,7 @@ dependencies:
   # - Avoid uppercase letters in names/aliases, they cause install failure due to subchart resource naming
   # - Avoid hyphen characters in names/aliases, they introduce template rendering complications (https://github.com/helm/helm/issues/2192)
   - name: cert-manager
-    version: v1.14.4
+    version: v1.15.3
     alias: certmanager
     repository: https://charts.jetstack.io
     condition: certmanager.enabled