diff --git a/go.mod b/go.mod
index 35ff274b9..adf17cfd4 100644
--- a/go.mod
+++ b/go.mod
@@ -20,7 +20,7 @@ require (
 	github.com/docker/go-connections v0.4.0
 	github.com/fatih/structs v1.1.0
 	github.com/gambol99/go-marathon v0.0.0-20180614232016-99a156b96fb2
-	github.com/go-acme/lego/v4 v4.9.0
+	github.com/go-acme/lego/v4 v4.9.1
 	github.com/go-check/check v0.0.0-00010101000000-000000000000
 	github.com/go-kit/kit v0.10.1-0.20200915143503-439c4d2ed3ea
 	github.com/golang/protobuf v1.5.2
diff --git a/go.sum b/go.sum
index bcdaf4785..d546c08fe 100644
--- a/go.sum
+++ b/go.sum
@@ -669,8 +669,8 @@ github.com/gin-gonic/gin v1.7.4/go.mod h1:jD2toBW3GZUr5UMcdrwQA10I7RuaFOl/SGeDjX
 github.com/gin-gonic/gin v1.7.7 h1:3DoBmSbJbZAWqXJC3SLjAPfutPJJRN1U5pALB7EeTTs=
 github.com/gliderlabs/ssh v0.1.1/go.mod h1:U7qILu1NlMHj9FlMhZLlkCdDnU1DBEAqr0aevW3Awn0=
 github.com/globalsign/mgo v0.0.0-20181015135952-eeefdecb41b8/go.mod h1:xkRDCp4j0OGD1HRkm4kmhM+pmpv3AKq5SU7GMg4oO/Q=
-github.com/go-acme/lego/v4 v4.9.0 h1:8Hjj44IqRS7cigshMyFQ+0pIZvwgkG/+9A0UnNh7G8A=
-github.com/go-acme/lego/v4 v4.9.0/go.mod h1:g3JRUyWS3L/VObpp4bCxzJftKyf/Wba8QrSSnoiqjg4=
+github.com/go-acme/lego/v4 v4.9.1 h1:n9Z5MQwANeGSQKlVE3bEh9SDvAySK9oVYOKCGCESqQE=
+github.com/go-acme/lego/v4 v4.9.1/go.mod h1:g3JRUyWS3L/VObpp4bCxzJftKyf/Wba8QrSSnoiqjg4=
 github.com/go-asn1-ber/asn1-ber v1.3.1/go.mod h1:hEBeB/ic+5LoWskz+yKT7vGhhPYkProFKoKdwZRWMe0=
 github.com/go-chi/chi/v5 v5.0.0/go.mod h1:BBug9lr0cqtdAhsu6R4AAdvufI0/XBzAQSsUqJpoZOs=
 github.com/go-cmd/cmd v1.0.5/go.mod h1:y8q8qlK5wQibcw63djSl/ntiHUHXHGdCkPk0j4QeW4s=
diff --git a/webui/src/components/_commons/PanelMiddlewares.vue b/webui/src/components/_commons/PanelMiddlewares.vue
index 9c94cdfcd..c85e6a312 100644
--- a/webui/src/components/_commons/PanelMiddlewares.vue
+++ b/webui/src/components/_commons/PanelMiddlewares.vue
@@ -831,10 +831,16 @@
                 <div class="text-subtitle2">Not Before</div>
                 <boolean-state :value="!!exData(middleware).info.notBefore"/>
               </div>
+            </div>
+            <div class="row items-start no-wrap">
               <div class="col">
                 <div class="text-subtitle2">Sans</div>
                 <boolean-state :value="!!exData(middleware).info.sans"/>
               </div>
+              <div class="col">
+                <div class="text-subtitle2">Serial Number</div>
+                <boolean-state :value="!!exData(middleware).info.serialNumber"/>
+              </div>
             </div>
           </q-card-section>
           <!-- EXTRA FIELDS FROM MIDDLEWARES - [passTLSClientCert] - info - subject -->