diff --git a/bucket/haskell.json b/bucket/haskell.json
index 748bda3181..19437b862e 100644
--- a/bucket/haskell.json
+++ b/bucket/haskell.json
@@ -1,27 +1,24 @@
 {
     "homepage": "https://www.haskell.org",
-    "version": "8.6.3",
+    "version": "8.6.5",
+    "license": "BSD-3-Clause",
+    "description": "An advanced, purely functional programming language.",
     "architecture": {
         "64bit": {
-            "url": "https://haskell.org/platform/download/8.6.3/HaskellPlatform-8.6.3-core-x86_64-setup.exe",
-            "hash": "d94df2008a96a12957d27e4a99bbee38bd84f096a9474ede20126c73c89c1304"
-        },
-        "32bit": {
-            "url": "https://haskell.org/platform/download/8.6.3/HaskellPlatform-8.6.3-core-i386-setup.exe",
-            "hash": "e7ced4ec8aaee98cb49fd8e1d7dbd3f63fb148fec354e1bd7998a5e4e622f6b9"
+            "url": "https://haskell.org/platform/download/8.6.5/HaskellPlatform-8.6.5-core-x86_64-setup.exe#/dl.7z",
+            "hash": "b557748749f6c4073885ecdf43f7cd5d4d8c8f90712665943a1d265d78bb38c6",
+            "extract_dir": "$_14_"
         }
     },
     "installer": {
-        "args": [
-            "/S",
-            "/D=$dir"
+        "script": [
+            "Expand-7zipArchive -Path \"$dir\\HaskellPlatform-$version-core-x86_64-setup.exe\" -ExtractDir '$_15_' -Removal",
+            "Get-ChildItem -Path \"$dir\" | Convert-Path | ForEach-Object { Expand-7zipArchive -Path $_ -Removal }",
+            "Remove-Item -Path \"$dir\\`$PLUGINSDIR\", \"$dir\\*uninstall*\" -Recurse -Force"
         ]
     },
-    "uninstaller": {
-        "file": "Uninstall.exe",
-        "args": "/S"
-    },
     "bin": [
+        "stack.exe",
         "bin\\ghc.exe",
         "bin\\ghci.exe",
         "bin\\ghc-pkg.exe",
@@ -30,29 +27,29 @@
         "bin\\hpc.exe",
         "bin\\hsc2hs.exe",
         "bin\\runghc.exe",
-        "bin\\runhaskell.exe",
-        "lib\\extralibs\\bin\\cabal.exe"
+        "bin\\runhaskell.exe"
     ],
+    "shortcuts": [
+        [
+            "winghci\\winghci.exe",
+            "WinGHCi"
+        ]
+    ],
+    "env_add_path": "lib\\extralibs\\bin",
     "checkver": {
         "url": "https://www.haskell.org/platform/windows.html",
-        "re": "The latest version of the Haskell Platform for Windows is\\s+<strong>([\\d.]+)<\\/strong>"
+        "regex": "<strong>([\\d.]+)</strong>"
     },
     "autoupdate": {
         "architecture": {
             "64bit": {
-                "url": "https://haskell.org/platform/download/$version/HaskellPlatform-$version-core-x86_64-setup.exe",
+                "url": "https://haskell.org/platform/download/$version/HaskellPlatform-$version-core-x86_64-setup.exe#/dl.7z",
                 "hash": {
                     "url": "https://www.haskell.org/platform/windows.html",
-                    "regex": "(?sm)Start Menu.*64 bit Core:<br><textarea.+>$sha256.*32 bit Core"
-                }
-            },
-            "32bit": {
-                "url": "https://haskell.org/platform/download/$version/HaskellPlatform-$version-core-i386-setup.exe",
-                "hash": {
-                    "url": "https://www.haskell.org/platform/windows.html",
-                    "regex": "32 bit Core:<br><textarea.+>$sha256"
+                    "regex": ">$sha256<"
                 }
             }
         }
-    }
+    },
+    "notes": "For 32bit Haskell, please install 'versions/haskell863'."
 }