diff --git a/decs.d.ts b/src/external-untyped-modules.d.ts
similarity index 51%
rename from decs.d.ts
rename to src/external-untyped-modules.d.ts
index f1093ca..359dac7 100644
--- a/decs.d.ts
+++ b/src/external-untyped-modules.d.ts
@@ -1 +1,2 @@
 declare module 'node-elm-compiler';
+declare module 'tree-sitter-elm';
diff --git a/src/node-elm-compiler.d.ts b/src/node-elm-compiler.d.ts
new file mode 100644
index 0000000..359dac7
--- /dev/null
+++ b/src/node-elm-compiler.d.ts
@@ -0,0 +1,2 @@
+declare module 'node-elm-compiler';
+declare module 'tree-sitter-elm';