diff --git a/doc/configtables/clustering.csv b/doc/configtables/clustering.csv
index cf004dad..02a7b1fc 100644
--- a/doc/configtables/clustering.csv
+++ b/doc/configtables/clustering.csv
@@ -1,7 +1,7 @@
 ,Unit,Values,Description
 simplify_network,,,
 -- to_substations,bool,"{'true','false'}","Aggregates all nodes without power injection (positive or negative, i.e. demand or generation) to electrically closest ones"
--- algorithm,str,"One of {‘kmeans’, ‘hac’}",
+-- algorithm,str,"One of {‘kmeans’, ‘hac’, ‘modularity‘}",
 -- feature,str,"Str in the format ‘carrier1+carrier2+...+carrierN-X’, where CarrierI can be from {‘solar’, ‘onwind’, ‘offwind’, ‘ror’} and X is one of {‘cap’, ‘time’}.",
 cluster_network
 -- algorithm,str,"One of {‘kmeans’, ‘hac’}",
diff --git a/doc/release_notes.rst b/doc/release_notes.rst
index 7aee0e32..5d96be07 100644
--- a/doc/release_notes.rst
+++ b/doc/release_notes.rst
@@ -92,6 +92,8 @@ Upcoming Release
 
 * Hierarchical clustering was introduced. Distance metric is calculated from renewable potentials on hourly (feature entry ends with `-time`) or annual (feature entry in config end with `-cap`) values.
 
+* Greedy modularity clustering was introduced. Distance metric is based on electrical distance taking into account the impedance of all transmission lines of the network.
+
 
 Synchronisation Release - Ukraine and Moldova (17th March 2022)
 ===============================================================