diff --git a/ascii-predicates.cabal b/ascii-predicates.cabal
--- a/ascii-predicates.cabal
+++ b/ascii-predicates.cabal
@@ -1,7 +1,7 @@
 cabal-version: 2.0
 
 name: ascii-predicates
-version: 1.0.0.2
+version: 1.0.0.4
 synopsis: Various categorizations of ASCII characters
 category: Data, Text
 
@@ -18,7 +18,7 @@
 
 build-type: Simple
 
-tested-with: GHC == 8.10.1, GHC == 8.8.1, GHC == 8.6.5, GHC == 8.4.3
+tested-with: GHC == 9.0.1, GHC == 8.10.1, GHC == 8.8.1, GHC == 8.6.5, GHC == 8.4.3
 
 extra-source-files: changelog.txt
 
@@ -31,8 +31,9 @@
     default-extensions: NoImplicitPrelude
     ghc-options: -Wall
 
-    build-depends: base       >= 4.11 && < 4.15
-    build-depends: ascii-char >= 1.0  && < 1.1
+    build-depends: ascii-char ^>= 1.0
+
+    build-depends: base       >= 4.11 && < 4.16
 
     exposed-modules: ASCII.Predicates
     exposed-modules: ASCII.Lists
diff --git a/changelog.txt b/changelog.txt
--- a/changelog.txt
+++ b/changelog.txt
@@ -1,2 +1,3 @@
 1.0.0.0 - 2020-05-05 - Initial release
 1.0.0.2 - 2020-05-18 - Support GHC 8.10
+1.0.0.4 - 2021-02-20 - Support GHC 9.0
diff --git a/license.txt b/license.txt
--- a/license.txt
+++ b/license.txt
@@ -1,4 +1,4 @@
-Copyright 2020 Typeclass Consulting LLC
+Copyright 2021 Mission Valley Software LLC
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.