diff --git a/_posts/2020/05/2020-05-15-guidelines-for-chatting.md b/_posts/2020/05/2020-05-15-guidelines-for-chatting.md
index c44f7d5e1ce6ab16a57edf92f0ed87c6593cc9b2..3725eb4a469830e543fe7794fea56466ae25ecaa 100644
--- a/_posts/2020/05/2020-05-15-guidelines-for-chatting.md
+++ b/_posts/2020/05/2020-05-15-guidelines-for-chatting.md
@@ -3,7 +3,7 @@ title: "Guidelines for Chatting"
 title_image: volodymyr-hryshchenko-V5vqWC9gyEU-unsplash.jpg
 data: 2020-05-15
 authors:
-  - jandt
+  - Martin Hammitzsch (GFZ)
 layout: blogpost
 categories:
   - guidelines
diff --git a/_posts/2020/05/2020-05-15-guidelines-for-video-conferencing.md b/_posts/2020/05/2020-05-15-guidelines-for-video-conferencing.md
index fa157e9bcc35ebe5cc50e78ce3b15033a1982874..f4d40ac0253c543538e70df75c40f052421b8b31 100644
--- a/_posts/2020/05/2020-05-15-guidelines-for-video-conferencing.md
+++ b/_posts/2020/05/2020-05-15-guidelines-for-video-conferencing.md
@@ -3,7 +3,7 @@ title: "Guidelines for Video Conferencing"
 title_image: chris-montgomery-smgTvepind4-unsplash.jpg
 data: 2020-05-15
 authors:
-  - jandt
+  - Martin Hammitzsch (GFZ)
 layout: blogpost
 categories:
   - guidelines
diff --git a/_posts/2020/05/2020-05-15-guidelines-for-collaborative-notetaking.md b/_posts/2020/05/2020-06-26-guidelines-for-collaborative-notetaking.md
similarity index 99%
rename from _posts/2020/05/2020-05-15-guidelines-for-collaborative-notetaking.md
rename to _posts/2020/05/2020-06-26-guidelines-for-collaborative-notetaking.md
index 3020af01860810fef004b76642826201ae9b2631..5d94af9ab73894c72a5707bd2f2d9d52142c7542 100644
--- a/_posts/2020/05/2020-05-15-guidelines-for-collaborative-notetaking.md
+++ b/_posts/2020/05/2020-06-26-guidelines-for-collaborative-notetaking.md
@@ -1,9 +1,9 @@
 ---
 title: "Guidelines for Collaborative Notetaking"
 title_image: glenn-carstens-peters-RLw-UC03Gwc-unsplash.jpg
-data: 2020-05-15
+data: 2020-06-26
 authors:
-  - jandt
+  - Martin Hammitzsch (GFZ)
 layout: blogpost
 categories:
   - guidelines