diff --git a/doc/PRE_UPGRADE.md b/doc/PRE_UPGRADE.md
new file mode 100644
index 0000000..ea5924b
--- /dev/null
+++ b/doc/PRE_UPGRADE.md
@@ -0,0 +1,7 @@
+## Save your Tiddlers!
+
+It is very important that you backup your tiddlers locally befor upgrading.
+
+- Click on the cloud icon -> `Save snapshot for offline use`
+
+To restore a local backup to the server, drag and drop your tiddlers backup file into your TiddlyWiki page.
diff --git a/manifest.toml b/manifest.toml
index cb7b747..6e57a84 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -5,7 +5,7 @@ name = "TiddlyWiki"
 description.en = "Non-linear personal web notebook"
 description.fr = "Carnet Web personnel non linéaire"
 
-version = "5.2.6~ynh1"
+version = "5.2.7~ynh1"
 
 maintainers = ["eric_G"]
 
@@ -51,8 +51,8 @@ ram.runtime = "50M"
 
 [resources]
         [resources.sources.main]
-        url = "https://github.com/Jermolene/TiddlyWiki5/archive/v5.2.6.tar.gz"
-        sha256 = "19cba9e2d5d9b58a03af6548ac6a0e2b65ecc2b112321ce4bf88ae3ae092cfb3"
+        url = "https://github.com/Jermolene/TiddlyWiki5/archive/v5.2.7.tar.gz"
+        sha256 = "8db7e0a196f6afe311b0c4f5fd7ae36ad56ef31315480ae511f968691c3870ec"
         autoupdate.strategy = "latest_github_tag"
 
     [resources.ports]