diff --git a/dev/tasks/linux-packages/apache-arrow-release/Rakefile b/dev/tasks/linux-packages/apache-arrow-release/Rakefile
index dc2411f0de727..19a0e4f915fe3 100644
--- a/dev/tasks/linux-packages/apache-arrow-release/Rakefile
+++ b/dev/tasks/linux-packages/apache-arrow-release/Rakefile
@@ -43,7 +43,7 @@ class ApacheArrowReleasePackageTask < PackageTask
       keys_path = "#{@archive_base_name}/KEYS"
       download("https://www.apache.org/dyn/closer.lua?action=download&filename=arrow/KEYS",
                keys_path)
-      keys = File.read(keys_path)
+      keys = File.read(keys_path, encoding: "UTF-8")
       File.open(keys_path, "w") do |keys_file|
         is_ed25519_key = false
         deny_lists = [