diff --git a/mcwhirter-io.cabal b/mcwhirter-io.cabal
index ae31663..0d861a5 100644
--- a/mcwhirter-io.cabal
+++ b/mcwhirter-io.cabal
@@ -6,7 +6,7 @@ cabal-version:      >= 1.10
 executable site
   main-is:          site.hs
   build-depends:    base == 4.*
-                  , hakyll == 4.14.*
+                  , hakyll == 4.15.*
                   , pandoc
   ghc-options:      -threaded
   default-language: Haskell2010