diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+#### 0.1.0.3
+
+* Allow `attoparsec 0.12.*`
+
 #### 0.1.0.2
 
 * Allow `mtl 2.2.*`
diff --git a/generic-aeson.cabal b/generic-aeson.cabal
--- a/generic-aeson.cabal
+++ b/generic-aeson.cabal
@@ -1,5 +1,5 @@
 name:                generic-aeson
-version:             0.1.0.2
+version:             0.1.0.3
 synopsis:            Derivation of Aeson instances using GHC generics.
 description:         Derivation of Aeson instances using GHC generics.
 author:              Silk
@@ -28,7 +28,7 @@
   build-depends:
       base >= 4 && < 4.8
     , aeson >= 0.6 && < 0.8
-    , attoparsec == 0.11.*
+    , attoparsec >= 0.11 && < 0.13
     , generic-deriving == 1.6.*
     , mtl >= 2.0 && < 2.3
     , tagged >= 0.2 && < 0.8