-

diff --git a/lib/sprockets/manifest.rb b/lib/sprockets/manifest.rb
index e514ebb..9797575 100644
--- a/lib/sprockets/manifest.rb
+++ b/lib/sprockets/manifest.rb
@@ -165,6 +165,8 @@ def compile(*args)
       concurrent_compressors = []
       concurrent_writers     = []
 
+      pool = Concurrent::FixedThreadPool.new(5)
+
       find(*args) do |asset|
         files[asset.digest_path] = {
           'logical_path' => asset.logical_path,
@@ -189,7 +191,7 @@ def compile(*args)
           logger.debug "Skipping #{target}, already exists"
         else
           logger.info "Writing #{target}"
-          write_file = Concurrent::Future.execute { asset.write_to target }
+          write_file = Concurrent::Future.execute(executor: pool) { asset.write_to target }
           concurrent_writers << write_file
         end
         filenames << asset.filename
@@ -202,15 +204,17 @@ def compile(*args)
           logger.debug "Skipping #{target}.gz, already exists"
         else
           logger.info "Writing #{target}.gz"
-          concurrent_compressors << Concurrent::Future.execute do
+          concurrent_compressors << Concurrent::Future.execute(executor: pool) do
             write_file.wait! if write_file
             gzip.compress(target)
           end
         end
 
       end
+
       concurrent_writers.each(&:wait!)
       concurrent_compressors.each(&:wait!)
+      pool.shutdown
       save
 
       filenames