diff --git a/infra/helm/charts/app/templates/api-deployment.yaml b/infra/helm/charts/app/templates/api-deployment.yaml
index 87c3834..f1ca94c 100644
--- a/infra/helm/charts/app/templates/api-deployment.yaml
+++ b/infra/helm/charts/app/templates/api-deployment.yaml
@@ -51,3 +51,11 @@ spec:
             timeoutSeconds: 3
           resources:
             {{- toYaml .Values.api.resources | nindent 12 }}
+{{- if .Values.api.extraVolumeMounts }}
+          volumeMounts:
+            {{- toYaml .Values.api.extraVolumeMounts | nindent 12 }}
+{{- end }}
+{{- if .Values.api.extraVolumes }}
+      volumes:
+        {{- toYaml .Values.api.extraVolumes | nindent 8 }}
+{{- end }}
diff --git a/infra/helm/charts/app/values.yaml b/infra/helm/charts/app/values.yaml
index 989b7b8..bd7b509 100644
--- a/infra/helm/charts/app/values.yaml
+++ b/infra/helm/charts/app/values.yaml
@@ -16,6 +16,10 @@ api:
     fhirRelease: "R4"
   externalMongodbConnectionString: ""
   existingSecret: ""
+  # Extra volume mounts for the API container (e.g. for certificate files)
+  extraVolumeMounts: []
+  # Extra volumes for the API pod (e.g. Kubernetes Secrets)
+  extraVolumes: []
   # Hostnames for API HTTPRoute
   hostnames: []