diff --git a/.env.example b/.env.example
index 447c2f4ef..ef74a7c0f 100644
--- a/.env.example
+++ b/.env.example
@@ -41,7 +41,7 @@ RAILS_MAX_THREADS=5
 
 # The email from which all outgoing emails are sent
 # could user either  `email@yourdomain.com` or `BrandName <email@yourdomain.com>`
-MAILER_SENDER_EMAIL=Chatwoot <accounts@chatwoot.com>
+MAILER_SENDER_EMAIL="Chatwoot <accounts@chatwoot.com>"
 
 
 #SMTP domain key is set up for HELO checking
diff --git a/config/app.yml b/config/app.yml
index eaaed2980..65b08332a 100644
--- a/config/app.yml
+++ b/config/app.yml
@@ -1,5 +1,5 @@
 shared: &shared
-  version: '1.21.0'
+  version: '1.21.1'
 
 development:
   <<: *shared
diff --git a/deployment/nginx_chatwoot.conf b/deployment/nginx_chatwoot.conf
index b1f991781..8359431c9 100644
--- a/deployment/nginx_chatwoot.conf
+++ b/deployment/nginx_chatwoot.conf
@@ -30,7 +30,7 @@ server {
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_http_version 1.1;
-   proxy_set_header Connection “”;
+   proxy_set_header Connection "";
    proxy_buffering off;
    client_max_body_size 0;
    proxy_read_timeout 36000s;
diff --git a/package.json b/package.json
index 59d534ee8..b51f11f53 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@chatwoot/chatwoot",
-  "version": "1.21.0",
+  "version": "1.21.1",
   "license": "MIT",
   "scripts": {
     "eslint": "eslint app/javascript --fix",