diff --git a/witch.cabal b/witch.cabal
--- a/witch.cabal
+++ b/witch.cabal
@@ -1,7 +1,7 @@
 cabal-version: 2.2
 
 name: witch
-version: 1.2.0.4
+version: 1.2.1.0
 synopsis: Convert values from one type into another.
 description: Witch converts values from one type into another.
 
@@ -25,7 +25,7 @@
   build-depends:
     , base >= 4.16.0 && < 4.20
     , bytestring >= 0.11.3 && < 0.13
-    , containers >= 0.6.5 && < 0.7
+    , containers >= 0.6.5 && < 0.8
     , tagged >= 0.8.6 && < 0.9
     , text >= 1.2.5 && < 1.3 || >= 2.0 && < 2.2
     , time >= 1.11.1 && < 1.13