diff --git a/clients/lsp-gleam.el b/clients/lsp-gleam.el
index f78756feda..5e9651c864 100644
--- a/clients/lsp-gleam.el
+++ b/clients/lsp-gleam.el
@@ -40,7 +40,7 @@
 (lsp-register-client
  (make-lsp-client
   :new-connection (lsp-stdio-connection lsp-gleam-executable)
-  :major-modes '(gleam-mode)
+  :major-modes '(gleam-mode gleam-ts-mode)
   :priority -1
   :server-id 'gleam-lsp))
 
diff --git a/lsp-mode.el b/lsp-mode.el
index dce5851e79..5512efc768 100644
--- a/lsp-mode.el
+++ b/lsp-mode.el
@@ -956,6 +956,7 @@ Changes take effect only when a new session is started."
     (idris-mode . "idris")
     (idris2-mode . "idris2")
     (gleam-mode . "gleam")
+    (gleam-ts-mode . "gleam")
     (graphviz-dot-mode . "dot")
     (tiltfile-mode . "tiltfile")
     (solidity-mode . "solidity")