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diff --git a/qapi/block-core.json b/qapi/block-core.json
index 5c4fc72..e9fa649 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -1959,6 +1959,29 @@
##
+# @blockdev-change-medium:
+#
+# Changes the medium inserted into a block device by ejecting the current medium
+# and loading a new image file which is inserted as the new medium (this command
+# combines blockdev-open-tray, blockdev-remove-medium, blockdev-insert-medium
+# and blockdev-close-tray).
+#
+# @device: block device name
+#
+# @filename: filename of the new image to be loaded
+#
+# @format: #optional, format to open the new image with (defaults to
+# the probed format)
+#
+# Since: 2.5
+##
+{ 'command': 'blockdev-change-medium',
+ 'data': { 'device': 'str',
+ 'filename': 'str',
+ '*format': 'str' } }
+
+
+##
# @BlockErrorAction
#
# An enumeration of action that has been taken when a DISK I/O occurs