diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index ce4845faf..46ed982d0 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -15,7 +15,7 @@
 	},
 
 	// Add the IDs of extensions you want installed when the container is created.
-	"extensions": [],
+	"extensions": ["pgourlain.erlang", "jakebecker.elixir-ls"],
 
 	// Use 'forwardPorts' to make a list of ports inside the container available locally.
 	"forwardPorts": [5222, 5280, 5269],