diff --git a/bucket/mercurial.json b/bucket/mercurial.json
index fc9606d7c5..3f1fa50624 100644
--- a/bucket/mercurial.json
+++ b/bucket/mercurial.json
@@ -1,16 +1,16 @@
 {
     "homepage": "https://www.mercurial-scm.org/",
     "description": "Fast, lightweight, distributed source control management system designed for easy and efficient handling of very large distributed projects.",
-    "version": "5.5.2",
+    "version": "5.6rc0",
     "license": "GPL-2.0-only",
     "architecture": {
         "64bit": {
-            "url": "https://www.mercurial-scm.org/release/windows/Mercurial-5.5.2-x64.exe",
-            "hash": "f669a4cfa2776e8180d95a52f1235a05e97769eddd38c0ddbcea89351c5cede5"
+            "url": "https://www.mercurial-scm.org/release/windows/Mercurial-5.6rc0-x64.exe",
+            "hash": "0a2425c10e61a7ba03992f08a0a4ea5c901f340a11323691500c55f4af6fa18a"
         },
         "32bit": {
-            "url": "https://www.mercurial-scm.org/release/windows/Mercurial-5.5.2-x86.exe",
-            "hash": "44b7a630559eaf50f006aa491992ce2e2f9e892a65ce4e5d902d6c480bb28ad3"
+            "url": "https://www.mercurial-scm.org/release/windows/Mercurial-5.6rc0-x86.exe",
+            "hash": "5b3c53946e05ab6b13c693a77efe36ef9830e299f562dc4a458c4d28959ccf8a"
         }
     },
     "innosetup": true,