diff --git a/charts/fronius-exporter/values.yaml b/charts/fronius-exporter/values.yaml
index f16f66a..424cd01 100644
--- a/charts/fronius-exporter/values.yaml
+++ b/charts/fronius-exporter/values.yaml
@@ -44,7 +44,7 @@ telegraf:
     # -- Telegraf image location
     repository: library/telegraf
     # -- Telegraf image tag
-    tag: 1.20-alpine
+    tag: 1.33-alpine
   influxdb:
     # -- URL of an InfluxDB 2 instance
     url: http://influxdb2
diff --git a/charts/stiebeleltron-exporter/values.yaml b/charts/stiebeleltron-exporter/values.yaml
index c9009a3..93e9fb4 100644
--- a/charts/stiebeleltron-exporter/values.yaml
+++ b/charts/stiebeleltron-exporter/values.yaml
@@ -38,7 +38,7 @@ telegraf:
     # -- Telegraf image location
     repository: library/telegraf
     # -- Telegraf image tag
-    tag: 1.20-alpine
+    tag: 1.33-alpine
   influxdb:
     # -- URL of an InfluxDB 2 instance
     url: http://influxdb2