diff --git a/content/rancher/v2.x/en/installation/requirements/_index.md b/content/rancher/v2.x/en/installation/requirements/_index.md
index 867c969151b..64c9043fca7 100644
--- a/content/rancher/v2.x/en/installation/requirements/_index.md
+++ b/content/rancher/v2.x/en/installation/requirements/_index.md
@@ -32,6 +32,8 @@ For details on which OS and Docker versions were tested with each Rancher versio
 
 All supported operating systems are 64-bit x86.
 
+The `ntp` (Network Time Protocol) package should be installed. This prevents errors with certificate validation that can occur when the time is not synchronized between the client and server.
+
 > **Note:** Some distributions of Linux derived from RHEL, including Oracle Linux, may have default firewall rules that block communication with Helm. This [how-to guide]({{<baseurl>}}/rancher/v2.x/en/installation/options/firewall) shows how to check the default firewall rules and how to open the ports with `firewalld` if necessary.
 
 If you plan to run Rancher on ARM64, see [Running on ARM64 (Experimental).]({{<baseurl>}}/rancher/v2.x/en/installation/options/arm64-platform/)