diff --git a/apps/els_lsp/src/els_lsp.app.src b/apps/els_lsp/src/els_lsp.app.src
index e64287d73..4e6014d92 100644
--- a/apps/els_lsp/src/els_lsp.app.src
+++ b/apps/els_lsp/src/els_lsp.app.src
@@ -18,6 +18,9 @@
         els_core,
         gradualizer
     ]},
+    {optional_applications, [
+        edoc
+    ]},
     {env, []},
     {modules, []},
     {maintainers, []},