diff --git a/bucket/ammonite.json b/bucket/ammonite.json
index 736713cdea..72641c3a72 100644
--- a/bucket/ammonite.json
+++ b/bucket/ammonite.json
@@ -1,16 +1,17 @@
 {
-    "version": "2.5.11",
+    "version": "3.0.0-M1",
     "description": "Ammonite lets you use the Scala language for scripting purposes: in the REPL, as scripts, as a library, or as a standalone systems shell.",
     "homepage": "https://ammonite.io",
     "license": "MIT",
     "suggest": {
         "JDK": "java/openjdk"
     },
-    "url": "https://github.com/lihaoyi/Ammonite/releases/download/2.5.11/2.12-2.5.11#/amm.bat",
-    "hash": "2f7369e9031f89b113e4291a3f1dda2ede2dfe00ba09576249a1b97c2f6b9c79",
+    "url": "https://github.com/lihaoyi/Ammonite/releases/download/3.0.0-M1/2.12-3.0.0-M1#/amm.bat",
+    "hash": "4a5c1e3951ee7649db227338adf10f27d6cb77767f10898b8552f378a7e37cc4",
     "bin": "amm.bat",
     "checkver": {
-        "github": "https://github.com/lihaoyi/Ammonite"
+        "url": "https://api.github.com/repos/lihaoyi/Ammonite/releases",
+        "regex": "tag/([\\d\\w.-]+)"
     },
     "autoupdate": {
         "url": "https://github.com/lihaoyi/Ammonite/releases/download/$version/2.12-$version#/amm.bat"