diff --git a/check_process b/check_process
index b1ea4c6..04b722d 100644
--- a/check_process
+++ b/check_process
@@ -10,8 +10,6 @@
 		setup_private=1
 		setup_public=1
 		upgrade=1
-		# 3.4.14~ynh1
-		upgrade=1	from_commit=6e2eba4a9b6b455b35ce9d8e558c454a001bfacf
 		# 3.4.18~ynh1
 		upgrade=1	from_commit=674f8d3211ba98b10f169deea3127a8b378c6c3c
 		backup_restore=1
diff --git a/conf/app.src b/conf/app.src
index 3541b63..787ea93 100644
--- a/conf/app.src
+++ b/conf/app.src
@@ -1,5 +1,5 @@
-SOURCE_URL=https://github.com/timvisee/send/archive/refs/tags/v3.4.20.tar.gz
-SOURCE_SUM=d8b485383f5f2fdca98501e1abdacec158b2eb04a7a8a4dabae2a0d4f542c6e4
+SOURCE_URL=https://github.com/timvisee/send/archive/refs/tags/v3.4.21.tar.gz
+SOURCE_SUM=60b42b4c99b439b4d2aabea0efdab930c80730de4c8f46e41c68d05c1052ff1c
 SOURCE_SUM_PRG=sha256sum
 SOURCE_FORMAT=tar.gz
 SOURCE_IN_SUBDIR=true
diff --git a/conf/nginx.conf b/conf/nginx.conf
index 0ef73f7..1daeeaa 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -1,6 +1,7 @@
-location / {
+#sub_path_only rewrite ^__PATH__$ __PATH__/ permanent;
+location __PATH__/ {
 
-  proxy_pass       http://127.0.0.1:__PORT__;
+  proxy_pass       http://127.0.0.1:__PORT__/;
   proxy_set_header Host $host; 
   proxy_set_header X-Real-IP $remote_addr; 
   proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; 
@@ -16,5 +17,5 @@ location /api/ws {
   proxy_set_header Connection "";
   proxy_connect_timeout  4000s;
   proxy_read_timeout     4000s;
-  proxy_pass http://127.0.0.1:__PORT__;
+  proxy_pass http://127.0.0.1:__PORT__/;
 }
diff --git a/manifest.json b/manifest.json
index e8af167..cc73ea4 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
         "en": "File sharing which allows to send encrypted files",
         "fr": "Partage de fichiers qui permet d'envoyer des fichiers chiffrés"
     },
-    "version": "3.4.20~ynh2",
+    "version": "3.4.21~ynh1",
     "url": "https://github.com/timvisee/send",
     "upstream": {
         "license": "MPL-2.0",