diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,11 @@
 # Changelog for ghc-lib-parser-ex
 
+## 0.20211201 released 2021-12-01
+- Bugfix to `isFieldPunUpdate`
+
+## 9.2.0.1 released 2021-11-01
+- Update to `ghc-lib-parser-9.2.1.20211101`
+
 ## 0.20211101 released 2021-11-01
 - Update to `ghc-lib-parser-0.20211101`
 
diff --git a/ghc-lib-parser-ex.cabal b/ghc-lib-parser-ex.cabal
--- a/ghc-lib-parser-ex.cabal
+++ b/ghc-lib-parser-ex.cabal
@@ -1,6 +1,6 @@
 cabal-version:  1.18
 name:           ghc-lib-parser-ex
-version:        0.20211101
+version:        0.20211201
 description:    Please see the README on GitHub at <https://github.com/shayne-fletcher/ghc-lib-parser-ex#readme>
 homepage:       https://github.com/shayne-fletcher/ghc-lib-parser-ex#readme
 bug-reports:    https://github.com/shayne-fletcher/ghc-lib-parser-ex/issues
diff --git a/src/Language/Haskell/GhclibParserEx/GHC/Hs/Expr.hs b/src/Language/Haskell/GhclibParserEx/GHC/Hs/Expr.hs
--- a/src/Language/Haskell/GhclibParserEx/GHC/Hs/Expr.hs
+++ b/src/Language/Haskell/GhclibParserEx/GHC/Hs/Expr.hs
@@ -100,7 +100,7 @@
 -- Field puns in updates have a different type to field puns in
 -- constructions.
 #if defined (GHCLIB_API_HEAD)
-isFieldPunUpdate :: HsFieldBind (FieldOcc GhcPs) (LHsExpr GhcPs) -> Bool
+isFieldPunUpdate :: HsFieldBind (LAmbiguousFieldOcc GhcPs) (LHsExpr GhcPs) -> Bool
 isFieldPunUpdate = \case HsFieldBind {hfbPun=True} -> True; _ -> False
 #else
 isFieldPunUpdate :: HsRecField' (AmbiguousFieldOcc GhcPs) (LHsExpr GhcPs) -> Bool