diff --git a/roles/sysctl/defaults/main.yml b/roles/sysctl/defaults/main.yml
index ac69319..87f88e3 100644
--- a/roles/sysctl/defaults/main.yml
+++ b/roles/sysctl/defaults/main.yml
@@ -16,8 +16,9 @@ sysctl_params:
   - { key: net.ipv4.tcp_fastopen,              value: "3" }
   - { key: net.core.netdev_max_backlog,        value: "16384" }
   - { key: net.core.somaxconn,                 value: "4096" }
+  - { key: net.core.optmem_max,                 value: "2097152" }
   - { key: net.ipv4.tcp_notsent_lowat,         value: "16384" }
-  - { key: net.ipv4.tcp_fin_timeout,           value: "15" }
+  - { key: net.ipv4.tcp_fin_timeout,           value: "30" }
   - { key: net.ipv4.tcp_tw_reuse,              value: "1" }
   - { key: vm.swappiness,                      value: "1" }
   - { key: vm.dirty_ratio,                     value: "15" }