diff --git a/share/pgpkeys/grembo.key b/share/pgpkeys/grembo.key
index f060c8efe2..6cd2e4525d 100644
--- a/share/pgpkeys/grembo.key
+++ b/share/pgpkeys/grembo.key
@@ -3,11 +3,11 @@
 sh addkey.sh grembo 6897F8C16BFAFF9F ;
 -->
 <programlisting xmlns="http://docbook.org/ns/docbook" role="pgpfingerprint"><![CDATA[
-pub   rsa2048/6897F8C16BFAFF9F 2014-01-20 [SC] [expires: 2020-02-02]
+pub   rsa2048/6897F8C16BFAFF9F 2014-01-20 [SC] [expires: 2021-03-12]
       Key fingerprint = E842 4082 12D2 767A E29E  FCA4 6897 F8C1 6BFA FF9F
 uid                            Michael Gmelin <grembo@freebsd.org>
 uid                            Michael Gmelin <freebsd@grem.de>
-sub   rsa2048/9A052F3BB4E23160 2014-01-20 [E] [expires: 2020-02-02]
+sub   rsa2048/9A052F3BB4E23160 2014-01-20 [E] [expires: 2021-03-12]
 
 ]]></programlisting>
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 -----END PGP PUBLIC KEY BLOCK-----
 ]]></programlisting>