diff --git a/lua/lspconfig/configs/sourcekit.lua b/lua/lspconfig/configs/sourcekit.lua
index 99a61f61..9da1b3ed 100644
--- a/lua/lspconfig/configs/sourcekit.lua
+++ b/lua/lspconfig/configs/sourcekit.lua
@@ -15,6 +15,14 @@ return {
       local t = { objc = 'objective-c', objcpp = 'objective-cpp' }
       return t[ftype] or ftype
     end,
+    capabilities = {
+      textDocument = {
+        diagnostic = {
+          dynamicRegistration = true,
+          relatedDocumentSupport = true,
+        },
+      },
+    },
   },
   docs = {
     description = [[