diff --git a/docs/usage/parameters.md b/docs/usage/parameters.md
index 980a85f..782ee6f 100644
--- a/docs/usage/parameters.md
+++ b/docs/usage/parameters.md
@@ -8,9 +8,11 @@ description: Customising parameters for the CO2e calculation.
 You can adjust the nf-co2footprint plugin parameters in your config file as follows:
 
 ```groovy title="nextflow.config"
+def co2_timestamp = new java.util.Date().format( 'yyyy-MM-dd_HH-mm-ss')
+
 co2footprint {
-    file        = "${params.outdir}/co2footprint_trace.txt"
-    reportFile  = "${params.outdir}/co2footprint_report.html"
+    file        = "${params.outdir}/co2footprint_trace_${co2_timestamp}.txt"
+    reportFile  = "${params.outdir}/co2footprint_report_${co2_timestamp}.html"
     ci          = 300
     pue         = 1.4
 }