diff --git a/src/Data/Transaction.hs b/src/Data/Transaction.hs
--- a/src/Data/Transaction.hs
+++ b/src/Data/Transaction.hs
@@ -320,6 +320,7 @@
  -   Converters
  - ============== -}
 {- | An alias of 'first' for convenience.
+
 >>> :{
 toList $ do
   action 4
@@ -338,6 +339,7 @@
  #-}
 
 {- | An alias of 'filter'.
+
 >>> :{
 toList $ do
   action 4
@@ -347,6 +349,17 @@
   action 7
 :}
 [4,6,7]
+
+>>> :{
+toList $ do
+  action 4
+  filter even $ do
+    action 5
+    action 6
+  action 7
+:}
+[4,6,7]
+
 -}
 tFilter :: (a -> Bool) -> Transaction a -> Transaction a
 tFilter = filter
diff --git a/transaction.cabal b/transaction.cabal
--- a/transaction.cabal
+++ b/transaction.cabal
@@ -1,5 +1,5 @@
 name:                transaction
-version:             0.1.1.0
+version:             0.1.1.1
 synopsis:            Monadic representation of transactions.
 description:
     Monadic representation of transactions. Alike `List`, but can be declared with `do` notations.