diff --git a/share/metkit/language.yaml b/share/metkit/language.yaml
index be92ba66..1a95b62c 100644
--- a/share/metkit/language.yaml
+++ b/share/metkit/language.yaml
@@ -247,6 +247,10 @@ _field: &_field
       - [gfas, global fire assimilation system]
       - [gfra, global fire assimilation system reanalysis]
       - [kwbc, washington]
+      - [ldas, land data-assimilation system (near real time)]
+      - [ldbt, land data-assimilation system behind real time]
+      - [ldsb, land data-assimilation system statistics behind real time]
+      - [ldst, land data-assimilation system statistics (near real time)]
       - [lfpw, paris, toulouse]
       - [lwda, long window daily archive]
       - [lwwv, long window wave]
@@ -294,7 +298,13 @@ _field: &_field
       - [seap, sensitive area prediction]
       - [seas, seasonal forecast]
       - [sens, sf, sensitivity forecast]
+      - [sfdd, seasonal forecast daily and sub-daily data]
+      - [sfdp, seasonal forecast derived products]
+      - [sfmd, seasonal forecast monthly data]
       - [sfmm, seasonal forecast atmospheric monthly means]
+      - [shdd, seasonal hindcast daily and sub-daily data]
+      - [shdp, seasonal hindcast derived products]
+      - [shmd, seasonal hindcast monthly data]
       - [smma, seasonal monthly means anomalies]
       - [sttd, Statistics of deterministic data]
       - [stte, Statistics of ensemble data]
@@ -479,6 +489,13 @@ _field: &_field
       - [v3.5]
       - [v4.0]
       - [v5.0]
+      - [49r2-sfdd]
+      - [50r1-oper]
+      - [50r1-enfo]
+      - [50r1-sfdd]
+      - [50r2-oper]
+      - [50r2-enfo]
+      - [50r2-sfdd]
 
   georef:
     category: data