diff --git a/conf/app.src b/conf/app.src
index 7c85370..1b1704c 100644
--- a/conf/app.src
+++ b/conf/app.src
@@ -1,5 +1,5 @@
-SOURCE_URL=https://github.com/LycheeOrg/Lychee/releases/download/v4.3.0/Lychee.zip
-SOURCE_SUM=4d9afdafb3d6711e85779377ebde523d7ef0a5bf3aea6ff7ca29ef6058536184
+SOURCE_URL=https://github.com/LycheeOrg/Lychee/releases/download/v4.3.4/Lychee.zip
+SOURCE_SUM=6f51e8239bc38cba0ae8f0759b7eb4c87a09009cab07b3694f4666f7411b0f8d
 SOURCE_SUM_PRG=sha256sum
 SOURCE_FORMAT=zip
 SOURCE_IN_SUBDIR=true
diff --git a/manifest.json b/manifest.json
index ec6bd86..9d06b3e 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
         "en": "Photo-management-system to manage and share photos.",
         "fr": "Système de gestion de photos pour gérer et partager des photos."
     },
-    "version": "4.3~ynh2",
+    "version": "4.3.4~ynh1",
     "url": "https://lycheeorg.github.io/",
     "upstream": {
         "license": "MIT",