diff --git a/book/source/04-certificates.md b/book/source/04-certificates.md
index 55e8bfc..4aab196 100644
--- a/book/source/04-certificates.md
+++ b/book/source/04-certificates.md
@@ -70,7 +70,7 @@ For each OpenPGP component key, an *OpenPGP fingerprint* can be derived from the
 Every OpenPGP component key can be named by a fingerprint
 ```
 
-The fingerprint of our example component OpenPGP key is `AAA1 8CBB 2546 85C5 8358 3205 63FD 37B6  7F33 00F9 FB0E C457 378C D29F 1026 98B3` [^keyid].
+The fingerprint of our example component OpenPGP key is `C0A5 8384 A438 E5A1 4F73 7124 26A4 D45D  BAEE F4A3 9E6B 30B0 9D55 13F9 78AC CA94`[^keyid].
 
 [^keyid]: In OpenPGP version 4, the rightmost 64 bit were sometimes used as a shorter identifier, called "Key ID".
 E.g., an OpenPGP version 4 certificate with the fingerprint `B3D2 7B09 FBA4 1235 2B41  8972 C8B8 6AC4 2455 4239` might be referred to by the 64 bit Key ID `C8B8 6AC4 2455 4239` or styled as `0xC8B86AC424554239`.