diff --git a/bucket/dafny.json b/bucket/dafny.json
index 983be4bf8c..c2787ac08f 100644
--- a/bucket/dafny.json
+++ b/bucket/dafny.json
@@ -1,12 +1,12 @@
 {
-    "version": "3.11.0",
+    "version": "3.12.0",
     "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/v3.11.0/dafny-3.11.0-x64-win.zip",
-            "hash": "1bbb56bfe73cab0b864a0f205b274c7a591e1c47a7be40f7773b394e4ae44d5f",
+            "url": "https://github.com/dafny-lang/dafny/releases/download/v3.12.0/dafny-3.12.0-x64-win.zip",
+            "hash": "2355261784fe331ff48fcee55b4c663382c25f51d381af4f27e83cb820d4dd33",
             "extract_dir": "dafny"
         }
     },