spec: add Harald as author too
diff --git a/docs/imsi-pseudo-spec-docinfo.xml b/docs/imsi-pseudo-spec-docinfo.xml
index 0ddb3fd..2bf4618 100644
--- a/docs/imsi-pseudo-spec-docinfo.xml
+++ b/docs/imsi-pseudo-spec-docinfo.xml
@@ -32,6 +32,17 @@
<jobtitle>Employee</jobtitle>
</affiliation>
</author>
+ <author>
+ <firstname>Harald</firstname>
+ <surname>Welte</surname>
+ <email>hwelte@sysmocom.de</email>
+ <authorinitials>HW</authorinitials>
+ <affiliation>
+ <shortaffil>sysmocom</shortaffil>
+ <orgname>sysmocom - s.f.m.c. GmbH</orgname>
+ <jobtitle>Managing Director</jobtitle>
+ </affiliation>
+ </author>
</authorgroup>
<copyright>