diff --git a/CHANGES b/CHANGES
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,12 @@
+* 0.2.3.5 (11 August 2022)
+
+  - Change base upper bound to < 5.
+  - Test with GHC 9.2 and 9.4.
+
+* 0.2.3.4-r1 (22 February 2021)
+
+  - Allow base-4.15 for GHC-9.0
+
 * 0.2.3.4 (22 February 2020)
 
   - Allow base-4.14 for GHC-8.10
diff --git a/README b/README
--- a/README
+++ b/README
@@ -9,7 +9,7 @@
 
   There are no dependencies other than the base package.
   Data.List.Split has been tested with versions of GHC from 6.8.3 up
-  through 8.0.1.  It is completely Haskell2010 (probably also
+  through 9.0.1.  It is completely Haskell2010 (probably also
   Haskell98) compliant, so it probably builds with other compilers as
   well.
 
diff --git a/split.cabal b/split.cabal
--- a/split.cabal
+++ b/split.cabal
@@ -1,5 +1,5 @@
 Name:                split
-Version:             0.2.3.4
+Version:             0.2.3.5
 Stability:           stable
 
 Description:         A collection of various methods for splitting
@@ -35,7 +35,23 @@
 Category:            List
 Build-type:          Simple
 Cabal-Version:       >= 1.10
-Tested-with:         GHC ==7.0.4 || ==7.2.2 || ==7.4.2 || ==7.6.3 || ==7.8.4 || ==7.10.3 || ==8.0.2 || ==8.2.2 || ==8.4.4 || ==8.6.5 || ==8.8.2 || ==8.10.1
+Tested-with:
+  GHC == 7.0.4
+  GHC == 7.2.2
+  GHC == 7.4.2
+  GHC == 7.6.3
+  GHC == 7.8.4
+  GHC == 7.10.3
+  GHC == 8.0.2
+  GHC == 8.2.2
+  GHC == 8.4.4
+  GHC == 8.6.5
+  GHC == 8.8.4
+  GHC == 8.10.7
+  GHC == 9.0.1
+  GHC == 9.2.4
+  GHC == 9.4.1
+
 Bug-reports:         https://github.com/byorgey/split/issues
 
 Test-suite split-tests
@@ -51,7 +67,7 @@
 
 Library
   ghc-options:       -Wall
-  build-depends:     base < 4.15
+  build-depends:     base < 5
   exposed-modules:   Data.List.Split, Data.List.Split.Internals
   default-language:  Haskell2010
   Hs-source-dirs:    src
diff --git a/test/Properties.hs b/test/Properties.hs
--- a/test/Properties.hs
+++ b/test/Properties.hs
@@ -368,7 +368,7 @@
   where
     -- Chop off the smallest possible tail of elems to make the length
     -- evenly divisible by n.  This property used to have a
-    -- precondition (length elemens `mod` n == 0), but that led to too
+    -- precondition (length elements `mod` n == 0), but that led to too
     -- many discarded test cases and occasional test suite failures.
     elems' = take ((length elems `div` n) * n) elems