diff --git a/README.md b/README.md
index e746c89..b9ea660 100644
--- a/README.md
+++ b/README.md
@@ -69,22 +69,23 @@ There are also groups over on Mastodon that you can use to connect to fellow aca
 - [@academicsunite@a.gup.pe](https://a.gup.pe/u/academicsunite) (academic working conditions)
 - [@ancientneareast@a.gup.pe](https://a.gup.pe/u/ancientneareast)
 - [@anthropology@a.gup.pe](https://social.tchncs.de/web/@anthropology@a.gup.pe)
-- [@archaeodons@a.gup.pe](https://social.tchncs.de/web/@archaeodons@a.gup.pe)
 - [@antiquidons@a.gup.pe](https://a.gup.pe/u/antiquidons)
+- [@archaeodons@a.gup.pe](https://social.tchncs.de/web/@archaeodons@a.gup.pe)
+- [@biophysics@a.gup.pe](@biophysics@a.gup.pe)
 - [@cognition@a.gup.pe](https://a.gup.pe/u/cognition) (cognitive psychology)
 - [@cogsci@a.gup.pe](https://a.gup.pe/u/cogsci)
 - [@ecologies@a.gup.pe](https://a.gup.pe/u/ecologies)
 - [@edutooters@a.gup.pe](https://a.gup.pe/u/edutooters)
 - [@geodons@a.gup.pe](https://a.gup.pe/u/geodons)
 - [@histodons@a.gup.pe](https://a.gup.pe/u/histodons)
+- [@julialang@a.gup.pe](https://a.gup.pe/u/julialang) (The Julia programming language)
+- [@mechanobiology@a.gup.pe](@mechanobiology@a.gup.pe)
 - [@paleodons@a.gup.pe](https://a.gup.pe/u/paleodons)
 - [@philosophy@a.gup.pe](https://a.gup.pe/u/philosophy)
+- [@politicalscience@a.gup.pe](@politicalscience@a.gup.pe)
+- [@rstats@a.gup.pe](https://a.gup.pe/u/rstats) (The R language for statistical computing)
 - [@seresearchers@a.gup.pe](https://a.gup.pe/u/seresearchers) (Software Engineering)
 - [@sociology@a.gup.pe](https://a.gup.pe/u/sociology)
-- [@rstats@a.gup.pe](https://a.gup.pe/u/rstats) (The R language for statistical computing)
-- [@mechanobiology@a.gup.pe](@mechanobiology@a.gup.pe)
-- [@biophysics@a.gup.pe](@mechanobiology@a.gup.pe)
-- [@julialang@a.gup.pe](https://a.gup.pe/u/julialang) (The Julia programming language)
 
 ## Preprint/bibliography bots
 
@@ -110,10 +111,12 @@ If you are in academia and do not know where to register your account in the fed
 - [Archaeo.Social](https://archaeo.social/about) (Anthropologists/Archaeologists/Historians)
 - [Atmoschem](https://atmoschem.org/explore) (Atmospheric science & adjacent sciences)
 - [Fedihum](https://fedihum.org) (Humanities, with a focus on Digital Humanities)
-- [Fediscience](https://fediscience.org) (Science General)
+- [Fediphilosophy](https://fediphilosophy.org/) (Mastodon instance for academic philosophers; [server guide & rules](https://github.com/xiyudu/fediphilosophy))
+- [Fediscience](https://fediscience.org) (General science)
 - [Human Computer Interaction](https://hci.social)
 - [glammr.us](https://glammr.us/about) (galleries, libraries, archives, museums, and special collections, records, memory work)
 - [digipres](https://digipres.club/about) (digital galleries, libraries, archives, museums, and special collections, digitital preservation)
+- [Julia Language](https://julialang.social/)
 - [Mathstodon](https://mathstodon.xyz)
 - [Med-Mastodon](https://med-mastodon.com/about)
 - [Open Educational Resources](https://mastodon.oeru.org)