diff --git a/Security-Tokens.md b/Security-Tokens.md
index 4035b3d..820bd4c 100644
--- a/Security-Tokens.md
+++ b/Security-Tokens.md
@@ -71,6 +71,7 @@ Here, we document some known quirks.
 
 other helpful resources:
 * https://github.com/philipWendland/IsoApplet/wiki/Tested-Smart-Cards
+* SmartPGP diff between 3.0.1 branch and master https://github.com/ANSSI-FR/SmartPGP/compare/javacard-3.0.1
 
 # Problems with Smartphones and NFC