diff --git a/app/Version.hs b/app/Version.hs
index 9c2f3556be..c8031aa7b3 100644
--- a/app/Version.hs
+++ b/app/Version.hs
@@ -17,7 +17,7 @@ import qualified Development.GitRev as GitRev
 -- prerelease identifier here (if any). When releasing a proper version, simply
 -- set this to an empty string.
 prerelease :: String
-prerelease = ""
+prerelease = "-alpha-01"
 
 versionString :: String
 versionString = showVersion Paths.version ++ prerelease ++ extra
diff --git a/purescript.cabal b/purescript.cabal
index 1a0da0f622..4ec66c5ee1 100644
--- a/purescript.cabal
+++ b/purescript.cabal
@@ -2,7 +2,7 @@ cabal-version:  2.4
 
 name:           purescript
 -- note: When updating the prerelease identifier, update it in app/Version.hs too!
-version:        0.14.7
+version:        0.15.0-alpha-01
 synopsis:       PureScript Programming Language Compiler
 description:    A small strongly, statically typed programming language with expressive types, inspired by Haskell and compiling to JavaScript.
 category:       Language