diff --git a/config/nvim/spell/en.utf-8.add b/config/nvim/spell/en.utf-8.add
index 771afdf..05fd954 100644
--- a/config/nvim/spell/en.utf-8.add
+++ b/config/nvim/spell/en.utf-8.add
@@ -109,3 +109,10 @@ Ardia
 Chromeleon
 eluent
 fluidics
+WebSocket
+DDK
+MQTT
+REQ
+BSON
+Toolchain
+toolchain