diff --git a/notmuch-hooks/post-new b/notmuch-hooks/post-new
index e74f1d6..a0f422d 100755
--- a/notmuch-hooks/post-new
+++ b/notmuch-hooks/post-new
@@ -71,14 +71,9 @@ archive tag:dodona subject:'Onderwijsinstelling aangemaakt voor .*'
 archive tag:dodona from:'logcheck system account'
 archive tag:dodona from:'KlasCement'
 archive tag:dodona subject:'Een gebruiker kon niet inloggen'
-archive tag:dodona subject:'status was changed to internal error' 'course_id: 186' # computergebruik 2019-2020
-archive tag:dodona subject:'status was changed to internal error' 'course_id: 175' # FEA 2019-2020
-archive tag:dodona subject:'status was changed to internal error' 'course_id: 156' # GUGC 2019-2020
-archive tag:dodona subject:'status was changed to internal error' 'course_id: 234' # industrieel ingenieur 2019-2020
-archive tag:dodona subject:'status was changed to internal error' 'course_id: 264' # scriptingtalen 2019-2020
-archive tag:dodona subject:'status was changed to internal error' 'course_id: 294' # python testen eerstjaars 2019-2020
 archive tag:dodona subject:'status was changed to internal error' 'course_id: 317' # C testcursus 2020-2021
-archive tag:dodona subject:'status was changed to internal error' 'course_id: 335' # R basic
+archive tag:dodona subject:'status was changed to internal error' 'course_id: 335' # R basic 2020-2021
+archive tag:dodona subject:'status was changed to internal error' 'course_id: 380' # C# 2020-2021
 archive tag:dodona subject:'status was changed to internal error' 'user_id: 3' # Peter
 archive tag:github thread:{from:dependabot} \
 	-subject:Security \