diff --git a/bucket/dafny.json b/bucket/dafny.json
index a386b2650c..0be56b4017 100644
--- a/bucket/dafny.json
+++ b/bucket/dafny.json
@@ -1,12 +1,12 @@
 {
-    "version": "4.1.0",
+    "version": "4.2.0",
     "description": "A programming language with a program verifier",
     "homepage": "https://dafny-lang.github.io/dafny/",
     "license": "MIT",
     "architecture": {
         "64bit": {
-            "url": "https://github.com/dafny-lang/dafny/releases/download/v4.1.0/dafny-4.1.0-x64-windows-2019.zip",
-            "hash": "1ebb7746b9b94f72563810c53789c45c9ba1d8c7aeb03d6b72e59a7e8b45f35a",
+            "url": "https://github.com/dafny-lang/dafny/releases/download/v4.2.0/dafny-4.2.0-x64-windows-2019.zip",
+            "hash": "6e20aee580ae507e458b5ce6e7a2614c5726c42d45d2db55612fcbf55e91cba0",
             "extract_dir": "dafny"
         }
     },