--- singleton-bool-0.1.8/singleton-bool.cabal	2001-09-09 03:46:40.000000000 +0200
+++ singleton-bool-0.1.8.new/singleton-bool.cabal	2024-12-26 17:19:40.201474256 +0100
@@ -36,7 +36,7 @@
   hs-source-dirs:   src
   ghc-options:      -Wall
   build-depends:
-    , base     >=4.12.0.0 && <4.21
+    , base     >=4.12.0.0 && <4.22
     , deepseq  >=1.4.4.0  && <1.6
 
   build-depends: