1 files changed, 1 insertions, 0 deletions
diff --git a/lib/net/imap.rb b/lib/net/imap.rb
index 97b960a0c2..58215fc8c8 100644
--- a/lib/net/imap.rb
+++ b/lib/net/imap.rb
@@ -901,6 +901,7 @@ module Net
           context.verify_callback = VerifyCallbackProc 
         end
         @sock = SSLSocket.new(@sock, context)
+        @sock.sync_close = true
         @sock.connect   # start ssl session.
         @sock.post_connection_check(@host) if verify
       else