diff --git a/runtime/oat.h b/runtime/oat.h
index 924f77c..a38eebc 100644
--- a/runtime/oat.h
+++ b/runtime/oat.h
@@ -32,7 +32,7 @@
 class PACKED(4) OatHeader {
  public:
   static constexpr uint8_t kOatMagic[] = { 'o', 'a', 't', '\n' };
-  static constexpr uint8_t kOatVersion[] = { '1', '2', '3', '\0' };  // ARM Baker link-time thunks.
+  static constexpr uint8_t kOatVersion[] = { '1', '2', '4', '\0' };  // New compiler filter names.
 
   static constexpr const char* kImageLocationKey = "image-location";
   static constexpr const char* kDex2OatCmdLineKey = "dex2oat-cmdline";