diff --git a/ansible/install_config/group_vars/rpm_version.yml b/ansible/install_config/group_vars/rpm_version.yml
index 09a45dfd..ef01c1d5 100644
--- a/ansible/install_config/group_vars/rpm_version.yml
+++ b/ansible/install_config/group_vars/rpm_version.yml
@@ -21,7 +21,7 @@ firewall_rpm_version:
   mesa_sip: mesa_sip-1.2.0.287cadc
   fw_voip_plug: fw_voip_plug-1.0.7.0521f2f
   app_proto_identify: app_proto_identify-2.0.16.85f5d7c
-  app_proto_engine: app_proto_engine-2.1.5.9a87f07
+  app_proto_engine: app_proto_engine-2.1.6.e324726
   gtp: gtp-1.0.5.afa055c
   gtp_signaling_plug: gtp_signaling_plug-1.0.3.c3d2c93
   deal_socks: deal_socks-1.0.3.651bc6f
diff --git a/ansible/roles/firewall/templates/main.conf.j2.j2 b/ansible/roles/firewall/templates/main.conf.j2.j2
index 88b473c0..8c2da757 100644
--- a/ansible/roles/firewall/templates/main.conf.j2.j2
+++ b/ansible/roles/firewall/templates/main.conf.j2.j2
@@ -126,7 +126,7 @@ PUBLISH_TOPIC="APP_SIGNATURE_ID"
 
 [APP_PROTO_ENGINE]
 debug_swtich=30
-nb_workers=60000
+nb_flows=30000
 classification_cache_enable=2
 basic_dpi_enable=1