diff --git a/crdt-event-fold.cabal b/crdt-event-fold.cabal
--- a/crdt-event-fold.cabal
+++ b/crdt-event-fold.cabal
@@ -1,6 +1,6 @@
 cabal-version:       3.0
 name:                crdt-event-fold
-version:             1.8.1.0
+version:             1.8.1.1
 synopsis:            Garbage collected event folding CRDT.
 description:         Garbage collected event folding CRDT. Consistently
                      apply arbitrary operations to replicated data.
@@ -17,9 +17,9 @@
 common dependencies
   build-depends:
     , aeson              >= 2.0.3.0  && < 2.3
-    , base               >= 4.15.1.0 && < 4.20
+    , base               >= 4.15.1.0 && < 4.21
     , binary             >= 0.8.8.0  && < 0.9
-    , containers         >= 0.6.4.1  && < 0.7
+    , containers         >= 0.6.4.1  && < 0.8
     , data-default-class >= 0.1.2.0  && < 0.2
     , data-dword         >= 0.3.2.1  && < 0.4
     , exceptions         >= 0.10.4   && < 0.11