diff --git a/deps/rcheevos/CHANGELOG.md b/deps/rcheevos/CHANGELOG.md
index 302c240306..0a1a1d002a 100644
--- a/deps/rcheevos/CHANGELOG.md
+++ b/deps/rcheevos/CHANGELOG.md
@@ -1,3 +1,7 @@
+# v6.5.0
+
+* Added a schema for errors returned by the server
+
 # v6.4.0
 
 * Added an enumeration with the console identifiers used in RetroAchievements
diff --git a/deps/rcheevos/README.md b/deps/rcheevos/README.md
index d9da7487ba..4685e7a11f 100644
--- a/deps/rcheevos/README.md
+++ b/deps/rcheevos/README.md
@@ -502,6 +502,7 @@ enum {
 * `rc_json_login_t`: The login token for the user, given their user name and password.
 * `rc_json_patch_t`: The information about a game, given its identifier. It includes arrays with the achievements and leaderboards for the game.
 * `rc_json_unlocks_t`: The list of achievements already awarded for the player, given the game identifier. Used to avoid the emulator awarding achievements more than once.
+* `rc_json_error_t`: Error messages returned by the server.
 
 For each schema there are two functions, for example:
 
diff --git a/deps/rcheevos/include/rjson.h b/deps/rcheevos/include/rjson.h
index e8d5aa04ca..f13f0ef3bd 100644
--- a/deps/rcheevos/include/rjson.h
+++ b/deps/rcheevos/include/rjson.h
@@ -115,6 +115,15 @@ rc_json_unlocks_t;
 int rc_json_get_unlocks_size(const char* json);
 const rc_json_unlocks_t* rc_json_parse_unlocks(void* buffer, const char* json);
 
+typedef struct {
+  const char* error;
+  char success;
+}
+rc_json_error_t;
+
+int rc_json_get_error_size(const char* json);
+const rc_json_error_t* rc_json_parse_error(void* buffer, const char* json);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/deps/rcheevos/src/rjson/schema.c b/deps/rcheevos/src/rjson/schema.c
index f063568f60..afd2d64f65 100644
--- a/deps/rcheevos/src/rjson/schema.c
+++ b/deps/rcheevos/src/rjson/schema.c
@@ -551,6 +551,48 @@ const rc_json_unlocks_t* rc_json_parse_unlocks(void* buffer, const char* json) {
   return (const rc_json_unlocks_t*)rc_json_deserialize(buffer, 0x9b4e2684U, (const uint8_t*)json);
 }
 
+static const rc_json_field_meta_t rc_json_field_meta_error[] = {
+  {
+    /* Metadata for field const char* error;. */
+    /* name_hash */ 0x0d2011cfU,
+    /* type_hash */ 0x00000000U,
+    /* offset    */ RC_JSON_OFFSETOF(rc_json_error_t, error),
+    /* type      */ RC_JSON_TYPE_STRING,
+    /* flags     */ 0
+  },
+  {
+    /* Metadata for field char success;. */
+    /* name_hash */ 0x110461deU,
+    /* type_hash */ 0x00000000U,
+    /* offset    */ RC_JSON_OFFSETOF(rc_json_error_t, success),
+    /* type      */ RC_JSON_TYPE_BOOL,
+    /* flags     */ 0
+  },
+};
+
+static const rc_json_struct_meta_t rc_json_struct_meta_error = {
+  /* fields     */ rc_json_field_meta_error,
+  /* name_hash  */ 0x0d2011cfU,
+  /* size       */ sizeof(rc_json_error_t),
+  /* alignment  */ RC_JSON_ALIGNOF(rc_json_error_t),
+  /* num_fields */ 2
+};
+
+int rc_json_get_error_size(const char* json) {
+  size_t size;
+  int res = rc_json_get_size(&size, 0x0d2011cfU, (const uint8_t*)json);
+
+  if (res == RC_JSON_OK) {
+    res = (int)size;
+  }
+
+  return res;
+}
+
+const rc_json_error_t* rc_json_parse_error(void* buffer, const char* json) {
+  return (const rc_json_error_t*)rc_json_deserialize(buffer, 0x0d2011cfU, (const uint8_t*)json);
+}
+
 const rc_json_struct_meta_t* rc_json_resolve_struct(unsigned hash) {
 
   switch (hash) {
@@ -561,6 +603,7 @@ const rc_json_struct_meta_t* rc_json_resolve_struct(unsigned hash) {
     case 0xadc4ac0fU: return &rc_json_struct_meta_patchdata;
     case 0x0dddd3d5U: return &rc_json_struct_meta_patch;
     case 0x9b4e2684U: return &rc_json_struct_meta_unlocks;
+    case 0x0d2011cfU: return &rc_json_struct_meta_error;
     default: return NULL;
   }
 }
diff --git a/deps/rcheevos/src/rjson/schema.dej b/deps/rcheevos/src/rjson/schema.dej
index a902d5e835..f11e6a55f8 100644
--- a/deps/rcheevos/src/rjson/schema.dej
+++ b/deps/rcheevos/src/rjson/schema.dej
@@ -73,3 +73,10 @@ struct unlocks/Unlocks {
   unsigned gameid/GameID;
   bool     hardcore/HardcoreMode;
 };
+
+//----------------------------------------------------------------------------
+
+struct error/Error {
+  bool success/Success;
+  string error/Error;
+};