diff --git a/GHC/LanguageExtensions/Type.hs b/GHC/LanguageExtensions/Type.hs
--- a/GHC/LanguageExtensions/Type.hs
+++ b/GHC/LanguageExtensions/Type.hs
@@ -120,6 +120,7 @@
    | MultiWayIf
    | BinaryLiterals
    | NegativeLiterals
+   | HexFloatLiterals
    | DuplicateRecordFields
    | OverloadedLabels
    | EmptyCase
@@ -131,4 +132,5 @@
    | Strict
    | StrictData
    | MonadFailDesugaring
+   | EmptyDataDeriving
    deriving (Eq, Enum, Show, Generic)
diff --git a/ghc-boot-th.cabal b/ghc-boot-th.cabal
--- a/ghc-boot-th.cabal
+++ b/ghc-boot-th.cabal
@@ -1,5 +1,5 @@
 name:           ghc-boot-th
-version:        8.2.2
+version:        8.4.1
 license:        BSD3
 license-file:   LICENSE
 category:       GHC
@@ -31,4 +31,4 @@
             GHC.ForeignSrcLang.Type
             GHC.Lexeme
 
-    build-depends: base       >= 4.7 && < 4.11
+    build-depends: base       >= 4.7 && < 4.12