diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -9,13 +9,9 @@
 
 ``` haskell
 $ duet run demo.hs
-[1]
 (\x -> x + 5) (2 * 3)
-[2]
 (2 * 3) + 5
-[3]
 6 + 5
-[4]
 11
 ```
 
diff --git a/app/Main.hs b/app/Main.hs
--- a/app/Main.hs
+++ b/app/Main.hs
@@ -23,6 +23,7 @@
   { runInputFile :: FilePath
   , runMainIs :: String
   , runConcise :: Bool
+  , runNumbered :: Bool
   , runSteps :: Int
   } deriving (Show)
 
@@ -44,6 +45,7 @@
             (long "main" <> metavar "NAME" <> help "The main value to run" <>
              value "main") <*>
           flag False True (long "concise" <> help "Concise view") <*>
+          flag False True (long "numbered" <> help "Number outputs") <*>
           option
             auto
             (long "steps" <> short 'n' <> metavar "steps" <>
@@ -71,7 +73,10 @@
       mapM_
         (\(step, expr) ->
            putStrLn
-             ("[" ++ show step ++ "]\n" ++ printExpression defaultPrint expr))
+             ((if runNumbered
+                 then "[" ++ show step ++ "]\n"
+                 else "") ++
+              printExpression defaultPrint expr))
         (zip
            [1 :: Integer ..]
            (filter
diff --git a/duet.cabal b/duet.cabal
--- a/duet.cabal
+++ b/duet.cabal
@@ -1,7 +1,7 @@
 name:
   duet
 version:
-  0.0.1
+  0.0.2
 cabal-version:
   >=1.10
 build-type:
@@ -9,9 +9,9 @@
 maintainer:
   chrisdone@gmail.com
 synopsis:
-  A tiny language, a subset of Haskell (with type classes) aimed at aiding teachers teach Haskell
+  A tiny language, a subset of Haskell (with type classes) aimed at aiding teachers to teach Haskell
 description:
-  A tiny language, a subset of Haskell (with type classes) aimed at aiding teachers teach Haskell
+  A tiny language, a subset of Haskell (with type classes) aimed at aiding teachers to teach Haskell
 license: BSD3
 extra-source-files: README.md, LICENSE.md
 
@@ -19,7 +19,7 @@
   hs-source-dirs:
     src
   build-depends:
-    base >= 4.5 && < 4.7,
+    base >= 4.5 && < 5,
     containers,
     mtl,
     exceptions,
@@ -57,7 +57,7 @@
   ghc-options: -Wall -O0
   default-language: Haskell2010
   build-depends:
-      base >= 4.5 && < 4.7, duet,
+      base >= 4.5 && < 5, duet,
     containers,
     mtl,
     exceptions,
@@ -76,7 +76,7 @@
   ghc-options: -Wall
   default-language: Haskell2010
   build-depends:
-      base >= 4.5 && < 4.7, duet,
+      base >= 4.5 && < 5, duet,
     containers,
     mtl,
     exceptions,