diff --git a/runtime/BUILD.gn b/runtime/BUILD.gn
index 9db127b03c7..81af36d1732 100644
--- a/runtime/BUILD.gn
+++ b/runtime/BUILD.gn
@@ -375,6 +375,26 @@ action("generate_version_cc_file") {
     "../tools/VERSION",
     "vm/version_in.cc",
   ]
+
+  # This list must be kept in sync with the VM_SNAPSHOT_FILES in
+  # tools/make_version.py.
+  inputs += [
+    "vm/app_snapshot.cc",
+    "vm/app_snapshot.h",
+    "vm/dart.cc",
+    "vm/dart_api_impl.cc",
+    "vm/datastream.h",
+    "vm/image_snapshot.cc",
+    "vm/image_snapshot.h",
+    "vm/object.cc",
+    "vm/object.h",
+    "vm/raw_object.cc",
+    "vm/raw_object.h",
+    "vm/snapshot.cc",
+    "vm/snapshot.h",
+    "vm/symbols.cc",
+    "vm/symbols.h",
+  ]
   if (dart_version_git_info) {
     inputs += [ "$default_git_folder/logs/HEAD" ]
   }
diff --git a/tools/make_version.py b/tools/make_version.py
index 768870f8eff..1e7abc8d72f 100755
--- a/tools/make_version.py
+++ b/tools/make_version.py
@@ -15,24 +15,24 @@ import utils
 
 # When these files change, snapshots created by the VM are potentially no longer
 # backwards-compatible.
+# This list must be kept in sync with the inputs to generate_version_cc_file in
+# runtime/BUILD.gn.
 VM_SNAPSHOT_FILES = [
-    # Header files.
-    'app_snapshot.h',
-    'datastream.h',
-    'image_snapshot.h',
-    'object.h',
-    'raw_object.h',
-    'snapshot.h',
-    'symbols.h',
-    # Source files.
     'app_snapshot.cc',
+    'app_snapshot.h',
     'dart.cc',
     'dart_api_impl.cc',
+    'datastream.h',
     'image_snapshot.cc',
+    'image_snapshot.h',
     'object.cc',
+    'object.h',
     'raw_object.cc',
+    'raw_object.h',
     'snapshot.cc',
+    'snapshot.h',
     'symbols.cc',
+    'symbols.h',
 ]