diff --git a/forest.cabal b/forest.cabal
--- a/forest.cabal
+++ b/forest.cabal
@@ -1,5 +1,5 @@
 name:           forest
-version:        0.2.1
+version:        0.2.1.1
 synopsis:       Tree and Forest types
 license:        MPL-2.0
 license-file:   LICENSE
@@ -24,7 +24,7 @@
     Data.Tree.Forest
 
   build-depends:
-    aeson >= 0.2 && < 1.4,
+    aeson >= 0.2 && < 2,
     base >= 4.2 && < 5,
     comonad >= 5.0 && < 6,
     deepseq >= 1.1 && < 2,