diff --git a/lib/net/http.rb b/lib/net/http.rb
index 61c7a774..fbaf11d9 100644
--- a/lib/net/http.rb
+++ b/lib/net/http.rb
@@ -1047,6 +1047,7 @@ def connect
                                write_timeout: @write_timeout,
                                continue_timeout: @continue_timeout,
                                debug_output: @debug_output)
+      @last_communicated = nil
       on_connect
     rescue => exception
       if s
diff --git a/test/net/http/test_http.rb b/test/net/http/test_http.rb
index c8590219..b5156078 100644
--- a/test/net/http/test_http.rb
+++ b/test/net/http/test_http.rb
@@ -1168,6 +1168,30 @@ def test_keep_alive_get_auto_retry
     }
   end
 
+  def test_keep_alive_reset_on_new_connection
+    # Using WEBrick's debug log output on accepting connection:
+    #
+    #   "[2021-04-29 20:36:46] DEBUG accept: 127.0.0.1:50674\n"
+    @log_tester = nil
+    @server.logger.level = WEBrick::BasicLog::DEBUG
+
+    start {|http|
+      res = http.get('/')
+      http.keep_alive_timeout = 1
+      assert_kind_of Net::HTTPResponse, res
+      assert_kind_of String, res.body
+      http.finish
+      assert_equal 1, @log.grep(/accept/i).size
+
+      sleep 1.5
+      http.start
+      res = http.get('/')
+      assert_kind_of Net::HTTPResponse, res
+      assert_kind_of String, res.body
+      assert_equal 2, @log.grep(/accept/i).size
+    }
+  end
+
   class MockSocket
     attr_reader :count
     def initialize(success_after: nil)