diff --git a/mysql-test/mysql-test-run.pl b/mysql-test/mysql-test-run.pl
index b033166513a..b7fd4974754 100755
--- a/mysql-test/mysql-test-run.pl
+++ b/mysql-test/mysql-test-run.pl
@@ -162,7 +162,7 @@ my $opt_repeat= 1;
 my $opt_retry= 3;
 my $opt_retry_failure= 2;
 
-my $opt_parallel= 1;
+my $opt_parallel= 4;
 
 my $opt_strace_client;