diff --git a/bucket/simplex-chat.json b/bucket/simplex-chat.json
index 8f66d3eb7f..cf25d49202 100644
--- a/bucket/simplex-chat.json
+++ b/bucket/simplex-chat.json
@@ -1,12 +1,12 @@
 {
-    "version": "5.1.1",
+    "version": "4.5.4",
     "description": "Private and secure chat and applications platform",
     "homepage": "https://simplex.chat",
     "license": "AGPL-3.0-only",
     "architecture": {
         "64bit": {
-            "url": "https://github.com/simplex-chat/simplex-chat/releases/download/v5.1.1/simplex-chat-windows-x86-64#/simplex-chat.exe",
-            "hash": "39079dc91ae550849bc4ae1eebd9aa4fe6026b428fd4d459a69e9a1a5e10aa6c"
+            "url": "https://github.com/simplex-chat/simplex-chat/releases/download/v4.5.4/simplex-chat-windows-x86-64#/simplex-chat.exe",
+            "hash": "42ef007453b82b11adbba1aae834a2f3efa110cbcf1ae4bc9e04eae401192e71"
         }
     },
     "bin": "simplex-chat.exe",