diff --git a/test/erl/src/test_client.erl b/test/erl/src/test_client.erl
index c916cee..9bad592 100644
--- a/test/erl/src/test_client.erl
+++ b/test/erl/src/test_client.erl
@@ -160,12 +160,11 @@
         ClientS4
     end,
 
-  %% Use deprecated erlang:now until we start requiring OTP18
   %% Started = erlang:monotonic_time(milli_seconds),
-  {_, StartSec, StartUSec} = erlang:now(),
+  {_, StartSec, StartUSec} = erlang:timestamp(),
   error_logger:info_msg("testOneway"),
   {Client20, {ok, ok}} = thrift_client:call(Client19, testOneway, [1]),
-  {_, EndSec, EndUSec} = erlang:now(),
+  {_, EndSec, EndUSec} = erlang:timestamp(),
   Elapsed = (EndSec - StartSec) * 1000 + (EndUSec - StartUSec) / 1000,
   if
     Elapsed > 1000 -> exit(1);