diff --git a/charts/prometheus-blackbox-exporter/Chart.yaml b/charts/prometheus-blackbox-exporter/Chart.yaml
index dc931c620ba4..09af82898004 100644
--- a/charts/prometheus-blackbox-exporter/Chart.yaml
+++ b/charts/prometheus-blackbox-exporter/Chart.yaml
@@ -1,7 +1,7 @@
 apiVersion: v1
 description: Prometheus Blackbox Exporter
 name: prometheus-blackbox-exporter
-version: 4.5.1
+version: 4.5.2
 appVersion: 0.17.0
 home: https://github.com/prometheus/blackbox_exporter
 sources:
diff --git a/charts/prometheus-blackbox-exporter/values.yaml b/charts/prometheus-blackbox-exporter/values.yaml
index b7db0e0a6180..3fae201dfcb7 100644
--- a/charts/prometheus-blackbox-exporter/values.yaml
+++ b/charts/prometheus-blackbox-exporter/values.yaml
@@ -52,7 +52,7 @@ config:
       prober: http
       timeout: 5s
       http:
-        valid_http_versions: ["HTTP/1.1", "HTTP/2"]
+        valid_http_versions: ["HTTP/1.1", "HTTP/2.0"]
         no_follow_redirects: false
         preferred_ip_protocol: "ip4"