diff --git a/doc/tutorial/tutorial.cabal b/doc/tutorial/tutorial.cabal
index 628ca87f..e6ec21c9 100644
--- a/doc/tutorial/tutorial.cabal
+++ b/doc/tutorial/tutorial.cabal
@@ -21,7 +21,7 @@ library
   --                 , Server
   -- other-modules:
   -- other-extensions:
-  build-depends:       base >=4.8 && <4.9
+  build-depends:       base == 4.*
                      , text
                      , aeson
                      , blaze-html