diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@
 - Function bindings
   - Single argument functions
   - Multiple argument functions
-- Plotting (Optional)
+- Plotting
   - Static plots (no animation)
   - Dynamic plots (for multiple argument functions)
 
diff --git a/calculator.cabal b/calculator.cabal
--- a/calculator.cabal
+++ b/calculator.cabal
@@ -1,5 +1,5 @@
 name:                calculator
-version:             0.4.1.0
+version:             0.4.1.1
 synopsis:            A calculator repl, with variables, functions & Mathematica like dynamic plots.
 description:         A calculator repl that processes mathematical expressions.
                      Does basic arithmetic, and provides pre-defined basic mathematical functions.
@@ -76,6 +76,8 @@
                      , QuickCheck
                      , containers
                      , parsec
+                     , plot-gtk-ui
+                     , gtk
   ghc-options:         -Wall
   default-language:    Haskell2010