diff --git a/charts/argo-workflows/values.yaml b/charts/argo-workflows/values.yaml
index cae5f749..8d3c830d 100644
--- a/charts/argo-workflows/values.yaml
+++ b/charts/argo-workflows/values.yaml
@@ -124,7 +124,7 @@ controller:
     # -- Service metrics port name
     servicePortName: metrics
     # -- ServiceMonitor relabel configs to apply to samples before scraping
-    ## Ref: https://github.com/prometheus-operator/prometheus-operator/blob/master/Documentation/api.md#relabelconfig
+    ## Ref: https://github.com/prometheus-operator/prometheus-operator/blob/main/Documentation/api.md#relabelconfig
     relabelings: []
     # -- ServiceMonitor metric relabel configs to apply to samples before ingestion
     ## Ref: https://github.com/prometheus-operator/prometheus-operator/blob/main/Documentation/api.md#endpoint