diff --git a/bucket/mosquitto.json b/bucket/mosquitto.json
index 33e5fd1652..694e79b1c3 100644
--- a/bucket/mosquitto.json
+++ b/bucket/mosquitto.json
@@ -1,16 +1,16 @@
 {
-    "version": "2.0.21",
+    "version": "2.0.21a",
     "description": "An open-source message broker that implements the MQTT protocol.",
     "homepage": "https://mosquitto.org/",
     "license": "EPL-1.0",
     "architecture": {
         "64bit": {
-            "url": "https://mosquitto.org/files/binary/win64/mosquitto-2.0.21-install-windows-x64.exe#dl.7z",
-            "hash": "a3d5b619223689709d7c00a73c080e3d95a393d39f61d11aa8845c559aa71dd2"
+            "url": "https://mosquitto.org/files/binary/win64/mosquitto-2.0.21a-install-windows-x64.exe#dl.7z",
+            "hash": "0f83666f597314f4c90fa5e70461732480150f6ceecec6497a9f33f083c2fe58"
         },
         "32bit": {
-            "url": "https://mosquitto.org/files/binary/win32/mosquitto-2.0.21-install-windows-x86.exe#/dl.7z",
-            "hash": "0c0ba965925ff254fc300337f78bc72c156c302f74fbc07d48b0a1547fe4aee0"
+            "url": "https://mosquitto.org/files/binary/win32/mosquitto-2.0.21a-install-windows-x86.exe#/dl.7z",
+            "hash": "99ec126f68149d527e71574f9cd27c840cdc29911b7e27339d63f3e991c4c78c"
         }
     },
     "post_install": "Remove-Item \"$dir\\`$PLUGINSDIR\", \"$dir\\Uninst*\" -Recurse",