diff --git a/README.md b/README.md
index 8f3e1ae..4f4ea0d 100644
--- a/README.md
+++ b/README.md
@@ -18,4 +18,5 @@ or:
 cargo run outfile
 ```
 
-* tested on jdk20/G1 collector
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+* tested on jdk20/G1 collector
+* depends on tail command, so works best on linux/unix/macos
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