diff --git a/stack.json b/stack.json
index 71e88dba2b..7107497c48 100644
--- a/stack.json
+++ b/stack.json
@@ -1,15 +1,15 @@
 {
     "homepage": "https://www.haskellstack.org",
     "license": "BSD 3-Clause",
-    "version": "1.6.3",
+    "version": "1.6.5",
     "architecture": {
         "64bit": {
-            "url": "https://github.com/commercialhaskell/stack/releases/download/v1.6.3/stack-1.6.3-windows-x86_64.zip",
-            "hash": "461b3653496340b09dacaee6bdbf696a3d676e73031ace8e53cdc2479468301b"
+            "url": "https://github.com/commercialhaskell/stack/releases/download/v1.6.5/stack-1.6.5-windows-x86_64.zip",
+            "hash": "a3d6aaa675c7b8d35798322e6f747345e9366ab77fa8b3f4ec6b878e01f12ca8"
         },
         "32bit": {
-            "url": "https://github.com/commercialhaskell/stack/releases/download/v1.6.3/stack-1.6.3-windows-i386.zip",
-            "hash": "8ab7bdfd730bda38bd7a04b893ef04237340b475bb235f87494ba60da3bf4bcc"
+            "url": "https://github.com/commercialhaskell/stack/releases/download/v1.6.5/stack-1.6.5-windows-i386.zip",
+            "hash": "eade7d2ae87ba439df70670c4ff73ffa3f54e1450a3125dd582403bffa8c8bf4"
         }
     },
     "bin": [