diff --git a/lib/pgvector/pg.rb b/lib/pgvector/pg.rb
index b115b05..8752dc5 100644
--- a/lib/pgvector/pg.rb
+++ b/lib/pgvector/pg.rb
@@ -36,6 +36,21 @@ def decode(string, tuple = nil, field = nil)
       end
     end
 
+    module BinaryEncoder
+      # experimental
+      def self.type_map
+        tm = ::PG::TypeMapByClass.new
+        tm[::Pgvector::Vector] = Vector.new
+        tm
+      end
+
+      class Vector < ::PG::SimpleEncoder
+        def encode(value)
+          value.to_binary
+        end
+      end
+    end
+
     module TextDecoder
       class Vector < ::PG::SimpleDecoder
         def decode(string, tuple = nil, field = nil)
@@ -61,5 +76,20 @@ def decode(string, tuple = nil, field = nil)
         end
       end
     end
+
+    module TextEncoder
+      # experimental
+      def self.type_map
+        tm = ::PG::TypeMapByClass.new
+        tm[::Pgvector::Vector] = Vector.new
+        tm
+      end
+
+      class Vector < ::PG::SimpleEncoder
+        def encode(value)
+          value.to_s
+        end
+      end
+    end
   end
 end
diff --git a/test/pg_test.rb b/test/pg_test.rb
index 9a11729..ca8bdd5 100644
--- a/test/pg_test.rb
+++ b/test/pg_test.rb
@@ -70,6 +70,17 @@ def test_sparsevec_binary
     assert_nil res[1]["sparse_embedding"]
   end
 
+  def test_type_map_binary
+    vec = Pgvector::Vector.new([1, 2, 3])
+    coder = PG::BinaryEncoder::CopyRow.new(type_map: Pgvector::PG::BinaryEncoder.type_map)
+    assert_include vec.to_binary, coder.encode([vec])
+  end
+
+  def test_type_map_binary
+    coder = PG::TextEncoder::CopyRow.new(type_map: Pgvector::PG::TextEncoder.type_map)
+    assert_equal "[1.0,2.0,3.0]\n", coder.encode([Pgvector::Vector.new([1, 2, 3])])
+  end
+
   def conn
     @@conn ||= begin
       conn = PG.connect(dbname: "pgvector_ruby_test")