diff --git a/bobek.cabal b/bobek.cabal
index 9884798..42df799 100644
--- a/bobek.cabal
+++ b/bobek.cabal
@@ -63,16 +63,8 @@ test-suite test
                      , containers
                      , bytestring
                      , text
-  other-modules: Bobek.Destination
-                 Bobek.Filter
-                 Bobek.Message
-                 Bobek.ReceiveId
-                 Bobek.ScriptFilter
-                 Bobek.Source
-                 Bobek.Mover
-                 Bobek.Log
-                 Bobek.Test.FakeEnvironment
-  hs-source-dirs:      test lib
+  other-modules: Bobek.Test.FakeEnvironment
+  hs-source-dirs:      test
   default-language:    Haskell2010
   default-extensions:  DerivingStrategies, OverloadedStrings
   ghc-options:         -Weverything
diff --git a/readme.md b/readme.md
index 8cd2cef..a9102e3 100644
--- a/readme.md
+++ b/readme.md
@@ -14,3 +14,11 @@ cabal new-install ormolu
 ``` bash
 make format
 ```
+
+# coverage information
+
+``` bash
+cabal clean
+cabal new-configure --enable-test --enable-coverage
+caba new-test
+```
diff --git a/todo b/todo
index a32484e..f8a7a68 100644
--- a/todo
+++ b/todo
@@ -1,6 +1,4 @@
- - split up to library and executable
  - hlint
- - coverage
  - make sub probject Bobek
  - safe prelude
  - fix script filter protocol (length of message in first line, json?, base64)