diff --git a/fastsum.cabal b/fastsum.cabal
index c8c63ef..5666eb4 100644
--- a/fastsum.cabal
+++ b/fastsum.cabal
@@ -45,7 +45,7 @@ library
                      , deepseq >= 1.4 && <2
                      , ghc-prim >= 0.5 && <1
                      , hashable >= 1.2 && <2
-                     , template-haskell >= 2.12 && < 2.20
+                     , template-haskell >= 2.12 && < 2.22
   default-language:    Haskell2010
 
 executable examples