diff --git a/lib/ckb/types/types.rb b/lib/ckb/types/types.rb
index 2e02fb8e..d9aa211f 100644
--- a/lib/ckb/types/types.rb
+++ b/lib/ckb/types/types.rb
@@ -12,7 +12,6 @@
 require_relative "transaction_with_status"
 require_relative "transaction"
 require_relative "tx_status"
-require_relative "witness"
 require_relative "epoch"
 require_relative "alert_message"
 require_relative "chain_info"
diff --git a/lib/ckb/types/witness.rb b/lib/ckb/types/witness.rb
deleted file mode 100644
index 8b06e752..00000000
--- a/lib/ckb/types/witness.rb
+++ /dev/null
@@ -1,28 +0,0 @@
-# frozen_string_literal: true
-
-module CKB
-  module Types
-    class Witness
-      attr_accessor :data
-
-      # @param data [String[]] 0x...
-      def initialize(data:)
-        @data = data
-      end
-
-      def to_h
-        {
-          data: @data
-        }
-      end
-
-      def self.from_h(hash)
-        return if hash.nil?
-
-        new(
-          data: hash[:data]
-        )
-      end
-    end
-  end
-end