diff --git a/helm/dendrite/Chart.yaml b/helm/dendrite/Chart.yaml
index b352601e..3ef45a6d 100644
--- a/helm/dendrite/Chart.yaml
+++ b/helm/dendrite/Chart.yaml
@@ -1,6 +1,6 @@
 apiVersion: v2
 name: dendrite
-version: "0.12.0"
+version: "0.12.1"
 appVersion: "0.12.0"
 description: Dendrite Matrix Homeserver
 type: application
diff --git a/helm/dendrite/templates/_helpers.tpl b/helm/dendrite/templates/_helpers.tpl
index 02670658..36bcefd8 100644
--- a/helm/dendrite/templates/_helpers.tpl
+++ b/helm/dendrite/templates/_helpers.tpl
@@ -1,15 +1,9 @@
 {{- define "validate.config" }}
-{{- if not .Values.signing_key.create -}}
-{{-  fail "You must create a signing key for configuration.signing_key. (see https://github.com/matrix-org/dendrite/blob/master/docs/INSTALL.md#server-key-generation)" -}}
+{{- if and (not .Values.signing_key.create) (eq .Values.signing_key.existingSecret "") -}}
+{{-  fail "You must create a signing key for configuration.signing_key OR specify an existing secret name in .Values.signing_key.existingSecret to mount it. (see https://github.com/matrix-org/dendrite/blob/master/docs/INSTALL.md#server-key-generation)" -}}
 {{- end -}}
-{{- if not (or .Values.dendrite_config.global.database.host .Values.postgresql.enabled) -}}
-{{-  fail "Database server must be set." -}}
-{{- end -}}
-{{- if not (or .Values.dendrite_config.global.database.user .Values.postgresql.enabled) -}}
-{{-  fail "Database user must be set." -}}
-{{- end -}}
-{{- if not (or .Values.dendrite_config.global.database.password .Values.postgresql.enabled) -}}
-{{-  fail "Database password must be set." -}}
+{{- if and (not .Values.postgresql.enabled) (eq .Values.dendrite_config.global.database.connection_string "") -}}
+{{-  fail "Database connection string must be set." -}}
 {{- end -}}
 {{- end -}}
 
diff --git a/helm/dendrite/templates/deployment.yaml b/helm/dendrite/templates/deployment.yaml
index b463c7d0..2a0f3a9e 100644
--- a/helm/dendrite/templates/deployment.yaml
+++ b/helm/dendrite/templates/deployment.yaml
@@ -17,11 +17,7 @@ spec:
       labels:
         {{- include "dendrite.selectorLabels" . | nindent 8 }}
       annotations:
-        confighash-global: secret-{{ .Values.global | toYaml | sha256sum | trunc 32 }}
-        confighash-clientapi: clientapi-{{ .Values.clientapi | toYaml | sha256sum | trunc 32 }}
-        confighash-federationapi: federationapi-{{ .Values.federationapi | toYaml | sha256sum | trunc 32 }}
-        confighash-mediaapi: mediaapi-{{ .Values.mediaapi | toYaml | sha256sum | trunc 32 }}
-        confighash-syncapi: syncapi-{{ .Values.syncapi | toYaml | sha256sum | trunc 32 }}
+        confighash: secret-{{ .Values.dendrite_config | toYaml | sha256sum | trunc 32 }}
     spec:
       volumes:
       - name: {{ include "dendrite.fullname" . }}-conf-vol
@@ -57,7 +53,7 @@ spec:
         {{- if $.Values.dendrite_config.global.profiling.enabled }}
         env:
           - name: PPROFLISTEN
-            value: "localhost:{{- $.Values.global.profiling.port -}}"
+            value: "localhost:{{- $.Values.dendrite_config.global.profiling.port -}}"
         {{- end }}
         resources:
         {{- toYaml $.Values.resources | nindent 10 }}