diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -25,6 +25,34 @@
     $> # update the upper bound of all dependencies in 'myproject.cabal' by the cabal build information
     $> cabal-bounds update --upper --ignore=base myproject.cabal dist/dist-sandbox-*/setup-config 
 
+Examples
+========
+
+The `=>` shows what the result is of the operation for every dependency. Left is the dependency before
+calling the command, right the one after calling.
+
+    $> cabal drop myproject.cabal
+    lens >=4.0.1 && <4.1   =>   lens
+
+    $> cabal drop --upper myproject.cabal
+    lens >=4.0.1 && <4.1   =>   lens >=4.0.1
+
+If the cabal build (the setup-config) uses `lens 4.1.2`, then the results of the `update` command would be:
+
+    $> cabal update myproject.cabal setup-config
+    lens >=4.0.1 && <4.1   =>   lens >=4.1.2 && <4.2
+    lens                   =>   lens >=4.1.2 && <4.2
+
+    $> cabal update --lower myproject.cabal setup-config
+    lens >=4.0.1 && <4.1   =>   lens >=4.1.2
+    lens <4.1              =>   lens >=4.1.2
+    lens                   =>   lens >=4.1.2
+
+    $> cabal update --upper myproject.cabal setup-config
+    lens >=4.0.1 && <4.1   =>   lens >=4.0.1 && <4.2
+    lens >=4.0.1           =>   lens >=4.0.1 && <4.2
+    lens                   =>   lens >=4.1.2 && <4.2
+
 Installation
 ============
 
diff --git a/cabal-bounds.cabal b/cabal-bounds.cabal
--- a/cabal-bounds.cabal
+++ b/cabal-bounds.cabal
@@ -1,5 +1,5 @@
 name: cabal-bounds
-version: 0.1.2
+version: 0.1.3
 cabal-version: >=1.9.2
 build-type: Simple
 license: BSD3
@@ -20,7 +20,7 @@
  
 library
     build-depends: base >=3 && <5, cmdargs >=0.10.5 && <0.11,
-                   lens >=4.0.1 && <4.1, strict >=0.3.2 && <0.4, Cabal >=1.18.0
+                   lens >=4.0.1 && <4.1, strict >=0.3.2 && <0.4, Cabal >=1.18.0 && <1.19
     exposed-modules: CabalBounds.Args CabalBounds.Main
     exposed: True
     buildable: True
@@ -33,7 +33,7 @@
  
 executable cabal-bounds
     build-depends: base >=3 && <5, cmdargs >=0.10.5 && <0.11,
-                   lens >=4.0.1 && <4.1, strict >=0.3.2 && <0.4, Cabal >=1.18.0
+                   lens >=4.0.1 && <4.1, strict >=0.3.2 && <0.4, Cabal >=1.18.0 && <1.19
     main-is: Main.hs
     buildable: True
     cpp-options: -DCABAL
@@ -46,7 +46,7 @@
  
 test-suite cabal-bounds-tests
     build-depends: base >=3 && <5, cmdargs >=0.10.5 && <0.11,
-                   lens >=4.0.1 && <4.1, strict >=0.3.2 && <0.4, Cabal >=1.18.0,
+                   lens >=4.0.1 && <4.1, strict >=0.3.2 && <0.4, Cabal >=1.18.0 && <1.19,
                    tasty ==0.7.*, tasty-golden >=2.2.0.2 && <2.3,
                    filepath >=1.3.0.1 && <1.4, cabal-bounds -any
     type: exitcode-stdio-1.0