diff --git a/conf/app.src b/conf/app.src
index fbbad2e..97415d1 100644
--- a/conf/app.src
+++ b/conf/app.src
@@ -1,5 +1,5 @@
-SOURCE_URL=https://github.com/jgraph/drawio/archive/v15.6.8.tar.gz
-SOURCE_SUM=f8e73c988c8875ab8cd102ebacfa46b6267b9e77215a1cd6510fa1ee138d8293
+SOURCE_URL=https://github.com/jgraph/drawio/archive/v15.9.4.tar.gz
+SOURCE_SUM=fd46757f847929abae9b6b3092c21a4caf027895316a0d0bb1082381ed00cd7e
 SOURCE_SUM_PRG=sha256sum
 SOURCE_FORMAT=tar.gz
 SOURCE_IN_SUBDIR=true
diff --git a/conf/nginx.conf b/conf/nginx.conf
index 6ab44c7..77789de 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -6,11 +6,6 @@ location __PATH__/ {
   # See https://github.com/jgraph/drawio
   alias __FINALPATH__/src/main/webapp/;
 
-  # Force usage of https
-  if ($scheme = http) {
-    rewrite ^ https://$server_name$request_uri? permanent;
-  }
-
   # Common parameter to increase upload size limit in conjunction with dedicated php-fpm file
   #client_max_body_size 50M;
 
diff --git a/manifest.json b/manifest.json
index 53f57f0..a6c2321 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
         "en": "Online diagram software for making flowcharts, process diagrams, org charts, UML, ER and network diagrams",
         "fr": "Application en ligne qui permet de faire des schémas et du dessin vectoriel"
     },
-    "version": "15.6.8~ynh1",
+    "version": "15.9.4~ynh1",
     "url": "https://www.diagrams.net/",
     "upstream": {
         "license": "Apache-2.0",
@@ -21,7 +21,7 @@
         "email": "gofannon@riseup.net"
     },
     "requirements": {
-        "yunohost": ">= 4.2.0"
+        "yunohost": ">= 4.3.0"
     },
     "multi_instance": true,
     "services": [
diff --git a/scripts/restore b/scripts/restore
index acf1d72..5c03f66 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -37,8 +37,7 @@ final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 #=================================================
 ynh_script_progression --message="Validating restoration parameters..." --weight=2
 
-test ! -d $final_path \
-	|| ynh_die --message="There is already a directory: $final_path "
+test ! -d $final_path || ynh_die --message="There is already a directory: $final_path "
 
 #=================================================
 # STANDARD RESTORATION STEPS