diff --git a/README.md b/README.md
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+++ b/README.md
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-## Knutwurst's i3 MEGA M/S/P/X/Chiron/4MP2 Hybrid Firmware <br>(based on Marlin 2.0.x)
+## Knutwurst's i3 MEGA M/S/P/X/Chiron/4MP2 Hybrid Firmware <br>(based on Marlin 2.1.x)
 
 ## Übersicht