diff --git a/CHANGELOG b/CHANGELOG
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,8 @@
+1.2.0.9
+
+* Support base-4.10
+
+
 1.2.0.8
 
 * Support HUnit-1.5.
diff --git a/case-insensitive.cabal b/case-insensitive.cabal
--- a/case-insensitive.cabal
+++ b/case-insensitive.cabal
@@ -1,5 +1,5 @@
 name:          case-insensitive
-version:       1.2.0.8
+version:       1.2.0.9
 cabal-version: >=1.8
 build-type:    Simple
 license:       BSD3
@@ -33,7 +33,7 @@
 
 Library
   ghc-options: -Wall
-  build-depends: base       >= 3   && < 4.10
+  build-depends: base       >= 3   && < 4.11
                , bytestring >= 0.9 && < 0.11
                , text       >= 0.3 && < 1.3
                , deepseq    >= 1.1 && < 1.5
@@ -49,7 +49,7 @@
   hs-source-dirs: test
 
   build-depends: case-insensitive
-               , base                 >= 3     && < 4.10
+               , base                 >= 3     && < 4.11
                , bytestring           >= 0.9   && < 0.11
                , text                 >= 0.3   && < 1.3
                , HUnit                >= 1.2.2 && < 1.6
@@ -67,7 +67,7 @@
   ghc-options:    -Wall -O2
 
   build-depends: case-insensitive
-               , base                 >= 3     && < 4.10
+               , base                 >= 3     && < 4.11
                , bytestring           >= 0.9   && < 0.11
                , criterion            >= 0.6.1 && < 1.2
                , deepseq              >= 1.1   && < 1.5