diff --git a/charts/snyk-broker/templates/_helpers.tpl b/charts/snyk-broker/templates/_helpers.tpl
index f024502..191e2ed 100644
--- a/charts/snyk-broker/templates/_helpers.tpl
+++ b/charts/snyk-broker/templates/_helpers.tpl
@@ -155,3 +155,22 @@ true
 true
 {{- end }}
 {{- end }}
+
+{{/*
+NoProxy helper
+Ensure all values are trimmed, separated by comma, and do not contain protocol or port
+Validate against RFC 1123
+*/}}
+{{- define "snyk-broker.noProxy" -}}
+{{- $proxyUrls := .Values.noProxy | nospace -}}
+{{- $proxyUrlsWithoutProtocol := mustRegexReplaceAll "http(s?)://" $proxyUrls "" -}}
+{{- $sanitisedProxyUrls := "" -}}
+{{- range $proxyUrlsWithoutProtocol | split "," -}}
+{{- if ( mustRegexMatch "^[a-zA-Z0-9.-]+$" . ) -}}
+{{- $sanitisedProxyUrls = printf "%s,%s" $sanitisedProxyUrls . -}}
+{{- else }}
+{{- fail (printf "Entry %s for .Values.noProxy is invalid. Specify hostname only (no schema or port)" . ) -}}
+{{- end }}
+{{- end }}
+{{- $sanitisedProxyUrls |  trimPrefix "," -}}
+{{- end }}
diff --git a/charts/snyk-broker/templates/broker_deployment.yaml b/charts/snyk-broker/templates/broker_deployment.yaml
index daf7d2b..4e627b1 100644
--- a/charts/snyk-broker/templates/broker_deployment.yaml
+++ b/charts/snyk-broker/templates/broker_deployment.yaml
@@ -450,7 +450,7 @@ spec:
          {{- if .Values.noProxy }}
          # No Proxy Settings
             - name: NO_PROXY
-              value: {{ .Values.noProxy }}
+              value: {{ include "snyk-broker.noProxy" . }}
          {{- end }}
 
          {{- if (include "snyk-broker.acceptJson" .)}}
diff --git a/charts/snyk-broker/tests/broker_deployment_proxy.yaml b/charts/snyk-broker/tests/broker_deployment_proxy_test.yaml
similarity index 50%
rename from charts/snyk-broker/tests/broker_deployment_proxy.yaml
rename to charts/snyk-broker/tests/broker_deployment_proxy_test.yaml
index 4ec05b2..3448cf6 100644
--- a/charts/snyk-broker/tests/broker_deployment_proxy.yaml
+++ b/charts/snyk-broker/tests/broker_deployment_proxy_test.yaml
@@ -48,15 +48,52 @@ tests:
       - failedTemplate: {}
   - it: sets noproxy without protocol
     set:
-      httpsProxy: my.ghe.io
+      noProxy: my.ghe.io
     asserts:
       - contains:
           path: spec.template.spec.containers[0].env
           content:
             name: NO_PROXY
             value: my.ghe.io
-  - it: rejects noproxy with protocol
+  - it: corrects noproxy by removing protocol
     set:
-      httpsProxy: https://my.ghe.io
+      noProxy: https://my.ghe.io
     asserts:
-      - failedTemplate: {}
+      - contains:
+          path: spec.template.spec.containers[0].env
+          content:
+            name: NO_PROXY
+            value: my.ghe.io
+  - it: sets noproxy with multiple domains
+    set:
+      noProxy: my.ghe.io,my.other.host.tld
+    asserts:
+      - contains:
+          path: spec.template.spec.containers[0].env
+          content:
+            name: NO_PROXY
+            value: my.ghe.io,my.other.host.tld
+  - it: corrects noproxy with multiple domains, one with protocol
+    set:
+      noProxy: my.ghe.io,https://my.private.site
+    asserts:
+      - contains:
+          path: spec.template.spec.containers[0].env
+          content:
+            name: NO_PROXY
+            value: my.ghe.io,my.private.site
+  - it: corrects noproxy with multiple domains, one with protocol, with spaces
+    set:
+      noProxy: my.ghe.io, https://my.private.site
+    asserts:
+      - contains:
+          path: spec.template.spec.containers[0].env
+          content:
+            name: NO_PROXY
+            value: my.ghe.io,my.private.site
+  - it: rejects noproxy with multiple domains, one with protocol, one with a port
+    set:
+      noProxy: my.ghe.io, https://my.private.site,notadomain:12334
+    asserts:
+      - failedTemplate:
+          errorMessage: Entry notadomain:12334 for .Values.noProxy is invalid. Specify hostname only (no schema or port)
diff --git a/charts/snyk-broker/values.schema.json b/charts/snyk-broker/values.schema.json
index 639c47c..9edf1e1 100644
--- a/charts/snyk-broker/values.schema.json
+++ b/charts/snyk-broker/values.schema.json
@@ -290,7 +290,7 @@
       "$ref": "#/$defs/urlWithSchema"
     },
     "noProxy": {
-      "$ref": "#/$defs/urlNoSchema"
+      "type": "string"
     },
     "acceptJson":{
       "type": "string"
diff --git a/charts/snyk-broker/values.yaml b/charts/snyk-broker/values.yaml
index 5ef5d80..fee9567 100644
--- a/charts/snyk-broker/values.yaml
+++ b/charts/snyk-broker/values.yaml
@@ -250,6 +250,9 @@ httpProxy: ""
 httpsProxy: ""
 
 # No Proxy URL - This will apply to both Snyk Broker and Snyk Code Agent
+# Do not specify protocol (http(s)://) or port
+# Separate multiple entries by a comma
+# e.g. my.first.host,my.second.host
 noProxy: ""
 
 # For custom accept.json, specify the path to the accept.json using the --set-file command when installing the chart