diff --git a/fountainhead.cabal b/fountainhead.cabal
index dc6d047..168122b 100644
--- a/fountainhead.cabal
+++ b/fountainhead.cabal
@@ -12,7 +12,7 @@ author: Eugen Wissner
 license-files: LICENSE
 license: MPL-2.0
 
-copyright: (c) 2024 Eugen Wissner
+copyright: (c) 2025 Eugen Wissner
 category: Graphics
 
 extra-source-files:
@@ -25,7 +25,7 @@ common dependencies
     bytestring ^>= 0.12.0,
     text ^>= 2.1,
     zlib ^>= 0.7.0
-  default-language: GHC2021
+  default-language: GHC2024
 
 library
   import: dependencies
@@ -39,9 +39,9 @@ library
     Graphics.Fountainhead.TrueType
   hs-source-dirs: lib
   build-depends:
-    containers ^>= 0.6.5,
+    containers ^>= 0.7,
     megaparsec ^>= 9.7,
-    time ^>= 1.12,
+    time ^>= 1.14,
     transformers ^>= 0.6,
     vector ^>= 0.13.0
   ghc-options: -Wall
diff --git a/lib/Graphics/Fountainhead/Dumper.hs b/lib/Graphics/Fountainhead/Dumper.hs
index 1e1491c..dc7a60d 100644
--- a/lib/Graphics/Fountainhead/Dumper.hs
+++ b/lib/Graphics/Fountainhead/Dumper.hs
@@ -96,6 +96,7 @@ import qualified Text.Megaparsec as Megaparsec
 import Graphics.Fountainhead.Parser
     ( ParseErrorBundle
     , ParseState
+    , Parser
     , parseTable
     , cmapTableP
     , headTableP
@@ -831,6 +832,7 @@ parseRequired processedState fontDirectory = do
         , locaTable = requiredLoca
         } 
   where
+    findRequired :: String -> Parser a -> Either DumpError a
     findRequired tableName parser = 
         let missingError = Left $ DumpRequiredTableMissingError tableName
             parseFound tableEntry = parseTable tableEntry parser processedState
diff --git a/lib/Graphics/Fountainhead/Metrics.hs b/lib/Graphics/Fountainhead/Metrics.hs
index d298775..d67b090 100644
--- a/lib/Graphics/Fountainhead/Metrics.hs
+++ b/lib/Graphics/Fountainhead/Metrics.hs
@@ -133,7 +133,8 @@ collectMetrics fontFile ttfContents =
         (_processedState, Left initialResult) -> Left
             $ MetricsParseError initialResult
         (processedState, Right initialResult) -> do
-            let parseForMetrics' = parseForMetrics processedState initialResult
+            let parseForMetrics' :: String -> Parser a -> Either MetricsError a
+                parseForMetrics' = parseForMetrics processedState initialResult
 
             NameTable{ nameRecord, variable } <- parseForMetrics' "name" nameTableP
             psNameIndex <- maybeMetricsError (MetricsNameRecordNotFound 6)