diff --git a/src/gn/ninja_generated_file_target_writer.cc b/src/gn/ninja_generated_file_target_writer.cc
index 6c157e4..f09872e 100644
--- a/src/gn/ninja_generated_file_target_writer.cc
+++ b/src/gn/ninja_generated_file_target_writer.cc
@@ -28,8 +28,9 @@
 
   // A generated_file target should generate a stamp file with dependencies
   // on each of the deps and data_deps in the target. The actual collection is
-  // done at gen time, and so ninja doesn't need to know about it.
-  std::vector<OutputFile> output_files;
+  // done at gen time, but to have correct input deps in ninja, we add output
+  // from generated_file targets as deps for the stamp.
+  std::vector<OutputFile> output_files = target_->computed_outputs();
   std::vector<OutputFile> data_output_files;
   const auto& target_deps = resolved().GetTargetDeps(target_);
   for (const Target* dep : target_deps.linked_deps()) {
diff --git a/src/gn/ninja_generated_file_target_writer_unittest.cc b/src/gn/ninja_generated_file_target_writer_unittest.cc
index 676ba01..f883102 100644
--- a/src/gn/ninja_generated_file_target_writer_unittest.cc
+++ b/src/gn/ninja_generated_file_target_writer_unittest.cc
@@ -63,7 +63,8 @@
   writer.Run();
 
   const char expected[] =
-      "build obj/foo/bar.stamp: stamp obj/foo/dep.stamp obj/foo/dep2.stamp || "
+      "build obj/foo/bar.stamp: stamp foo.json obj/foo/dep.stamp "
+      "obj/foo/dep2.stamp || "
       "obj/foo/bundle_data_dep.stamp obj/foo/datadep.stamp\n";
   EXPECT_EQ(expected, out.str());
 }