diff --git a/nixd/lib/Syntax/Parser/Parser.y b/nixd/lib/Syntax/Parser/Parser.y
index a480488e2..e7ea5be7e 100644
--- a/nixd/lib/Syntax/Parser/Parser.y
+++ b/nixd/lib/Syntax/Parser/Parser.y
@@ -401,6 +401,12 @@ uri
   : URI {
     $$ = decorateNode(new nixd::syntax::URI, *yylocp, *Data);
     $$->S = std::string($1);
+
+    Diagnostic Diag;
+    Diag.Msg = "URL literal is deprecated";
+    Diag.Kind = Diagnostic::Warning;
+    Diag.Range = $$->Range;
+    Data->Diags.emplace_back(std::move(Diag));
   }
 
 identifier_or
diff --git a/nixd/tools/nixd-lint/test/url-literal.nix b/nixd/tools/nixd-lint/test/url-literal.nix
new file mode 100644
index 000000000..cbd648c45
--- /dev/null
+++ b/nixd/tools/nixd-lint/test/url-literal.nix
@@ -0,0 +1,5 @@
+# RUN: nixd-lint %s | FileCheck %s
+{
+  # CHECK: warning: URL literal is deprecated
+  bar = http://1.1.1.1;
+}