diff --git a/bucket/mro.json b/bucket/mro.json
index f8146363da..19384f70c5 100644
--- a/bucket/mro.json
+++ b/bucket/mro.json
@@ -1,5 +1,5 @@
 {
-    "version": "3.5.2",
+    "version": "3.5.3",
     "description": "Microsoft R Open: The enhanced distribution of R from Microsoft Corporation",
     "homepage": "https://mran.microsoft.com/",
     "license": "GPL-2.0-only",
@@ -8,8 +8,8 @@
     },
     "architecture": {
         "64bit": {
-            "url": "https://mran.blob.core.windows.net/install/mro/3.5.2/windows/microsoft-r-open-3.5.2.exe",
-            "hash": "296ff6358d3d9db6723cc7643778b1bf0cf6a3a7492438db4d3a31037391db56",
+            "url": "https://mran.blob.core.windows.net/install/mro/3.5.3/windows/microsoft-r-open-3.5.3.exe",
+            "hash": "a2ef254a63f60234996e6eafe9686fddf99b5835732ff52d6ae0f4bcd547d14b",
             "installer": {
                 "script": [
                     "Expand-DarkArchive \"$dir\\$fname\" \"$dir\\_tmp\"",