diff --git a/bucket/dafny.json b/bucket/dafny.json
index f5fface2a0..31f0a7a036 100644
--- a/bucket/dafny.json
+++ b/bucket/dafny.json
@@ -1,12 +1,12 @@
 {
-    "version": "4.4.0",
+    "version": "4.5.0",
     "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/v4.4.0/dafny-4.4.0-x64-windows-2019.zip",
-            "hash": "dcfcddf78c858a527d0e68c0fdaf1cb07010874c4f83aaa4288e991c2b15e069",
+            "url": "https://github.com/dafny-lang/dafny/releases/download/v4.5.0/dafny-4.5.0-x64-windows-2019.zip",
+            "hash": "a25a5d24cde19f676ee414895655d39aa3c0014bb48457de135afb57fcab276f",
             "extract_dir": "dafny"
         }
     },