diff --git a/hakyll-site.cabal b/hakyll-site.cabal
index d78f2f3..bd44200 100644
--- a/hakyll-site.cabal
+++ b/hakyll-site.cabal
@@ -1,11 +1,13 @@
-name:               hakyll-site
-version:            0.1.0.0
-build-type:         Simple
-cabal-version:      >= 1.10
+name:          hakyll-site
+version:       0.1.0.0
+build-type:    Simple
+cabal-version: >=1.10
 
 executable site
   main-is:          site.hs
-  build-depends:    base >= 4.12
-                  , hakyll == 4.15.*
+  build-depends:
+      base    >=4.12
+    , hakyll  >=4.15 && <4.16
+
   ghc-options:      -threaded
   default-language: Haskell2010