diff --git a/goenv/version.go b/goenv/version.go
index f6f22d78..5e71f7fd 100644
--- a/goenv/version.go
+++ b/goenv/version.go
@@ -12,7 +12,7 @@ import (
 
 // Version of TinyGo.
 // Update this value before release of new version of software.
-const Version = "0.20.0"
+const Version = "0.21.0-dev"
 
 // GetGorootVersion returns the major and minor version for a given GOROOT path.
 // If the goroot cannot be determined, (0, 0) is returned.