diff --git a/bucket/mercurial.json b/bucket/mercurial.json
index db6ee03cae..5b2dc0a1ce 100644
--- a/bucket/mercurial.json
+++ b/bucket/mercurial.json
@@ -1,16 +1,16 @@
 {
-    "version": "5.8.1",
+    "version": "5.9",
     "description": "Fast, lightweight, distributed source control management system designed for easy and efficient handling of very large distributed projects.",
     "homepage": "https://www.mercurial-scm.org/",
     "license": "GPL-2.0-only",
     "architecture": {
         "64bit": {
-            "url": "https://www.mercurial-scm.org/release/windows/Mercurial-5.8.1-x64.exe",
-            "hash": "829ffddabf75fe04467e07badcafc6ad63899cffde30a4920efa0ab66f0ad73a"
+            "url": "https://www.mercurial-scm.org/release/windows/Mercurial-5.9-x64.exe",
+            "hash": "e8c9b7ec52645c062483e449ec5ff1de1c690e73af70f4d264c58beccce76ef2"
         },
         "32bit": {
-            "url": "https://www.mercurial-scm.org/release/windows/Mercurial-5.8.1-x86.exe",
-            "hash": "5daccd5cfaf66fb4639d3f9425e4aad0a331309add87c0a15f3b7c92e4f0964a"
+            "url": "https://www.mercurial-scm.org/release/windows/Mercurial-5.9-x86.exe",
+            "hash": "69433085d7d4b664fb7ef2f92777e1f0a87fdc569ceda19202118c7ffd801c78"
         }
     },
     "innosetup": true,