diff --git a/npm-packages/cadence-parser/package.json b/npm-packages/cadence-parser/package.json
index f32b3e687a..a2fff22feb 100644
--- a/npm-packages/cadence-parser/package.json
+++ b/npm-packages/cadence-parser/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@onflow/cadence-parser",
-  "version": "1.0.0-preview.2",
+  "version": "1.0.0-M3",
   "description": "The Cadence parser",
   "homepage": "https://github.com/onflow/cadence",
   "repository": {
diff --git a/version.go b/version.go
index 2c4846a1ce..b5173b7e04 100644
--- a/version.go
+++ b/version.go
@@ -21,4 +21,4 @@
 
 package cadence
 
-const Version = "v1.0.0-preview.2"
+const Version = "v1.0.0-M3"