diff --git a/gir/gio-2.0.c b/gir/gio-2.0.c
index fc47538..708b61b 100644
--- a/gir/gio-2.0.c
+++ b/gir/gio-2.0.c
@@ -15382,7 +15381,7 @@
 /**
  * g_data_input_stream_read_upto:
  * @stream: a #GDataInputStream
- * @stop_chars: characters to terminate the read
+ * @stop_chars: (array length=stop_chars_len): characters to terminate the read
  * @stop_chars_len: length of @stop_chars. May be -1 if @stop_chars is
  *     nul-terminated
  * @length: (out): a #gsize to get the length of the data read in
@@ -15411,7 +15410,7 @@
 /**
  * g_data_input_stream_read_upto_async:
  * @stream: a #GDataInputStream
- * @stop_chars: characters to terminate the read
+ * @stop_chars: (array length=stop_chars_len): characters to terminate the read
  * @stop_chars_len: length of @stop_chars. May be -1 if @stop_chars is
  *     nul-terminated
  * @io_priority: the [I/O priority][io-priority] of the request
@@ -17350,7 +17349,7 @@
  * g_dbus_error_register_error_domain:
  * @error_domain_quark_name: The error domain name.
  * @quark_volatile: A pointer where to store the #GQuark.
- * @entries: A pointer to @num_entries #GDBusErrorEntry struct items.
+ * @entries: (array length=num_entries): A pointer to @num_entries #GDBusErrorEntry struct items.
  * @num_entries: Number of items to register.
  *
  * Helper function for associating a #GError error domain with D-Bus error names.
@@ -17853,7 +17852,7 @@
 
 /**
  * g_dbus_is_guid:
- * @string: The string to check.
+ * @string: (array fixed-size=33): The string to check.
  *
  * Checks if @string is a D-Bus GUID.
  *
@@ -39788,7 +39787,7 @@
 /**
  * g_tls_password_set_value:
  * @password: a #GTlsPassword object
- * @value: the new password value
+ * @value: (array length=length): the new password value
  * @length: the length of the password, or -1
  *
  * Set the value for this password. The @value will be copied by the password
  