1 files changed, 5 insertions, 0 deletions
diff --git a/lib/README b/lib/README
index ce24bce6..fb7d6c13 100644
--- a/lib/README
+++ b/lib/README
@@ -21,6 +21,11 @@ Atmel.SAM4S_DFP.1.0.56.atpack zip file found at:
   http://packs.download.atmel.com/
 version 1.0.56 (extracted on 20181220).
 
+The samc21 directory contains code from the
+Atmel.SAMC21_DFP.1.2.176.atpack zip file found at:
+  http://packs.download.atmel.com/
+version 1.2.176 (extracted on 20230115).
+
 The samd21 directory contains code from the
 Atmel.SAMD21_DFP.1.3.304.atpack zip file found at:
   http://packs.download.atmel.com/