diff --git a/mello.cabal b/mello.cabal
--- a/mello.cabal
+++ b/mello.cabal
@@ -5,7 +5,7 @@
 -- see: https://github.com/sol/hpack
 
 name:           mello
-version:        0.7.0
+version:        0.7.1
 synopsis:       No-fuss syntax with s-expressions
 description:    Please see the README on GitHub at <https://github.com/ejconlon/mello#readme>
 category:       Parsing
@@ -71,7 +71,7 @@
   build-depends:
       base >=4.12 && <5
     , bowtie ==0.8.*
-    , containers >=0.6 && <0.8
+    , containers >=0.6 && <0.9
     , foldl ==1.4.*
     , hashable >=1.4 && <1.6
     , looksee ==0.8.*
@@ -122,7 +122,7 @@
   build-depends:
       base >=4.12 && <5
     , bowtie ==0.8.*
-    , containers >=0.6 && <0.8
+    , containers >=0.6 && <0.9
     , daytripper ==1.0.*
     , foldl ==1.4.*
     , hashable >=1.4 && <1.6