diff --git a/scripts/README.md b/scripts/README.md
index e385449..c48b693 100644
--- a/scripts/README.md
+++ b/scripts/README.md
@@ -13,7 +13,7 @@ Replacing the folder as needed.
 
 ## TDP
 
-Lets you set the TDP using `intel_rapl`.  
+Lets you set the TDP using `intel_rapl`. Tested on Ubuntu 21.04.  
 Also supports shortened commands for minimal typing on the mediocre keyboard.
 
 PL1 is set to number provided, PL2 is set 2W higher, maybe PL2 will be customizable in the future.