diff --git a/data-forest.cabal b/data-forest.cabal
--- a/data-forest.cabal
+++ b/data-forest.cabal
@@ -1,5 +1,5 @@
 name:     data-forest
-version:  0.1.0.7
+version:  0.1.0.8
 category: Data Structures
 synopsis: A simple multi-way tree data structure.
 
@@ -22,6 +22,8 @@
 build-type: Simple
 cabal-version: >= 1.10
 
+tested-with: GHC == 8.0.2, GHC == 8.2.2, GHC == 8.4.3, GHC == 8.6.3, GHC == 8.8.1, GHC == 8.10.1
+
 library
   default-language: Haskell2010
   hs-source-dirs: src
@@ -29,7 +31,7 @@
   ghc-options: -Wall
 
   build-depends:
-      base >=4.9 && <4.12
+      base >=4.9 && <4.15
 
   exposed-modules:
       Data.Forest
@@ -43,6 +45,6 @@
   ghc-options: -Wall
 
   build-depends:
-      base >=4.9 && <4.12
+      base >=4.9 && <4.15
     , data-forest
     , doctest