diff --git a/library/Solr/Args.hs b/library/Solr/Args.hs
--- a/library/Solr/Args.hs
+++ b/library/Solr/Args.hs
@@ -9,7 +9,7 @@
 
 import Solr.Prelude
 import OptparseApplicative.Simple.Parser
-import qualified Attoparsec.Data.Explicit as A
+import qualified Attoparsec.Data as A
 import qualified Data.Text.Encoding as B
 import qualified Control.Monad.Managed.Safe as C
 import qualified Solr.Managed as D
diff --git a/solr.cabal b/solr.cabal
--- a/solr.cabal
+++ b/solr.cabal
@@ -1,7 +1,7 @@
 name:
   solr
 version:
-  0.4.1
+  0.4.2
 synopsis:
   A minimal Solr client library
 homepage:
@@ -51,7 +51,7 @@
     -- 
     managed == 1.*,
     optparse-applicative-simple >= 1 && < 1.1,
-    attoparsec-data == 0.1.*,
+    attoparsec-data == 1.*,
     -- networking:
     http-client == 0.5.*,
     http-client-tls == 0.3.*,