correct kernel version

Author: antobinary

_posts/2.5/2021-05-01-install.md

@@ -22,7 +22,7 @@ A 'clean' server does not have any previous web servers installed (such as apach
 
 For production, we recommend the following minimum requirements
 
-- Ubuntu 20.04 64-bit OS running Linux kernel 4.x
+- Ubuntu 20.04 64-bit OS running Linux kernel 5.x
 - Latest version of docker installed
 - 16 GB of memory with swap enabled
 - 8 CPU cores, with high single-thread performance
@@ -121,11 +121,11 @@ inet6 ::1/128 scope host
 
 If you do not see the line `inet6 ::1/128 scope host` then after you install BigBlueButton you will need to modify the configuration for FreeSWITCH to [disable support for IPV6](/support/troubleshooting.html#freeswitch-fails-to-bind-to-port-8021).
 
-Next, check that your server is running Linux kernel 4.x.
+Next, check that your server is running Linux kernel 5.x.
 
 ```bash
 $ uname -r
-4.15.0-NNN-generic
+5.4.x-xx-generic
 ```
 
 Note: BigBlueButton will **not** run on a 2.6 Kernel (such as Linux 2.6.32-042stab133.2 on x86_64 on OpenVZ VPS).