diff --git a/hasql-implicits.cabal b/hasql-implicits.cabal
--- a/hasql-implicits.cabal
+++ b/hasql-implicits.cabal
@@ -1,5 +1,5 @@
 name: hasql-implicits
-version: 0.1.0.5
+version: 0.1.1
 synopsis: Implicit definitions for Hasql, such as default codecs for standard types
 homepage: https://github.com/nikita-volkov/hasql-implicits
 bug-reports: https://github.com/nikita-volkov/hasql-implicits/issues
diff --git a/library/Hasql/Implicits/Encoders.hs b/library/Hasql/Implicits/Encoders.hs
--- a/library/Hasql/Implicits/Encoders.hs
+++ b/library/Hasql/Implicits/Encoders.hs
@@ -1,7 +1,7 @@
 {-# LANGUAGE CPP #-}
 module Hasql.Implicits.Encoders where
 
-import Hasql.Implicits.Prelude
+import Hasql.Implicits.Prelude hiding (bool)
 import Hasql.Encoders
 import qualified Data.Aeson as Aeson
 
@@ -85,5 +85,6 @@
 INSTANCES(LocalTime, timestamp)
 INSTANCES((TimeOfDay, TimeZone), timetz)
 INSTANCES((NetAddr IP), inet)
+INSTANCES(Bool, bool)
 
 #undef INSTANCES