diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -33,3 +33,7 @@
 ## 0.1.3.3 -- 2023-07-07
 
 * Rework of the sinkHashStreamly and hashFileStreamly functions in Yesod.Static.Streamly.Internal.
+
+## 0.1.3.4 -- 2023-07-08
+
+* Modified hashFileStreamly to set unlimited buffer, threading and eager scheduling for parEval function.
diff --git a/src/Yesod/Static/Streamly/Internal.hs b/src/Yesod/Static/Streamly/Internal.hs
--- a/src/Yesod/Static/Streamly/Internal.hs
+++ b/src/Yesod/Static/Streamly/Internal.hs
@@ -66,6 +66,7 @@
 import qualified Streamly.Data.Fold as Fold
 import Streamly.External.ByteString as StreamlyByteString
 import Streamly.FileSystem.Handle as StreamlyFile (chunkReader)
+import Streamly.Internal.Data.Stream.Concurrent.Channel (defaultConfig)
 import Streamly.Internal.Data.Stream.MkType (MonadThrow)
 import System.Directory (doesDirectoryExist,doesFileExist,getDirectoryContents)
 import System.IO (openFile,IOMode(ReadMode))
@@ -244,8 +245,11 @@
                  -> m (Crypto.Hash.Digest hash)
 hashFileStreamly fp = do
   shandle <- liftIO $ openFile fp ReadMode
-  let lazyfile = S.unfold StreamlyFile.chunkReader shandle
-  let lazyfilef = StreamlyPrelude.parEval id
+  let lazyfile  = S.unfold StreamlyFile.chunkReader shandle
+  let parconfig = do let parconfigmaxthreads              = maxThreads (-1) defaultConfig
+                     let parconfigmaxbufferandmaxthreads  = maxBuffer  (-1) parconfigmaxthreads
+                     eager True parconfigmaxbufferandmaxthreads
+  let lazyfilef = StreamlyPrelude.parEval (const . id $ parconfig)
                                           (fmap StreamlyByteString.fromArray lazyfile)
   lazyfileff <- S.fold (Fold.foldl' (<>) mempty) lazyfilef
   sinkHashStreamly lazyfileff
diff --git a/yesod-static-streamly.cabal b/yesod-static-streamly.cabal
--- a/yesod-static-streamly.cabal
+++ b/yesod-static-streamly.cabal
@@ -20,7 +20,7 @@
 -- PVP summary:     +-+------- breaking API changes
 --                  | | +----- non-breaking API additions
 --                  | | | +--- code changes with no API change
-version:            0.1.3.3
+version:            0.1.3.4
 
 -- A short (one-line) description of the package.
 synopsis:           A streamly-based library providing performance-focused alternatives for functionality found in yesod-static.