diff --git a/cabal-graphdeps.cabal b/cabal-graphdeps.cabal
--- a/cabal-graphdeps.cabal
+++ b/cabal-graphdeps.cabal
@@ -1,5 +1,5 @@
 name: cabal-graphdeps
-version: 0.1
+version: 0.1.1
 license: MIT
 license-file: license.txt
 author: John Millikin <john@john-millikin.com>
@@ -21,7 +21,7 @@
 source-repository this
   type: git
   location: https://john-millikin.com/code/cabal-graphdeps/
-  tag: cabal-graphdeps_0.1
+  tag: cabal-graphdeps_0.1.1
 
 executable cabal-graphdeps
   main-is: Main.hs
diff --git a/src/Main.hs b/src/Main.hs
--- a/src/Main.hs
+++ b/src/Main.hs
@@ -98,7 +98,7 @@
 	return version
 
 alphaNumDot :: Parsec.Parser Char
-alphaNumDot = Parsec.lower <|> Parsec.digit <|> Parsec.oneOf "-."
+alphaNumDot = Parsec.lower <|> Parsec.upper <|> Parsec.digit <|> Parsec.oneOf "-."
 
 renderDeps :: MainOptions -> Map.Map String (Set.Set String) -> String -> [String]
 renderDeps opts deps pkg = do