diff --git a/unsequential.cabal b/unsequential.cabal
--- a/unsequential.cabal
+++ b/unsequential.cabal
@@ -1,7 +1,7 @@
 name:
   unsequential
 version:
-  0.5.2
+  0.5.2.1
 synopsis:
   An extension removing the sequentiality from monads
 description:
@@ -51,7 +51,7 @@
     -- 
     transformers >= 0.4 && < 0.6,
     base-prelude < 2,
-    base < 5
+    base >= 4.8 && < 5
 
 
 test-suite attoparsec-integration-test