diff --git a/palette.cabal b/palette.cabal
index c1bd1ce..a2b560f 100644
--- a/palette.cabal
+++ b/palette.cabal
@@ -15,7 +15,7 @@ Build-type:          Simple
 Cabal-version:       1.18
 Extra-source-files:  README.markdown, diagrams/*.svg
 Extra-doc-files:     diagrams/*.svg, CHANGES.markdown
-Tested-with:         GHC ==8.0.2 || == 8.2.2 || == 8.4.4 || ==8.6.5 || ==8.8.4 || ==8.10.7 || ==9.0.2 || ==9.2.8 || ==9.4.8 || ==9.6.5 || ==9.8.2 || ==9.10.1
+Tested-with:         GHC ==8.0.2 || == 8.2.2 || == 8.4.4 || ==8.6.5 || ==8.8.4 || ==8.10.7 || ==9.0.2 || ==9.2.8 || ==9.4.8 || ==9.6.6 || ==9.8.2 || ==9.10.1 || ==9.12.1
 Source-repository head
   type:     git
   location: http://github.com/diagrams/palette.git
@@ -28,7 +28,7 @@ Library
                        Data.Colour.Palette.Types
                        Data.Colour.Palette.RandomColor
 
-  Build-depends:       base >= 4.2 && < 4.21,
+  Build-depends:       base >= 4.2 && < 4.22,
                        array >= 0.4 && < 0.6,
                        colour >= 2.3 && < 3.0,
                        containers >= 0.5 && < 0.8,