diff --git a/staging/ext-image-copy-capture/ext-image-copy-capture-v1.xml b/staging/ext-image-copy-capture/ext-image-copy-capture-v1.xml
index 1ac4369..d541bdc 100644
--- a/staging/ext-image-copy-capture/ext-image-copy-capture-v1.xml
+++ b/staging/ext-image-copy-capture/ext-image-copy-capture-v1.xml
@@ -34,7 +34,7 @@
     only be done by creating a new major version of the extension.
   </description>
 
-  <interface name="ext_image_copy_capture_manager_v1" version="1">
+  <interface name="ext_image_copy_capture_manager_v1" version="2">
     <description summary="manager to inform clients and begin capturing">
       This object is a manager which offers requests to start capturing from a
       source.
@@ -199,7 +199,7 @@
     </request>
   </interface>
 
-  <interface name="ext_image_copy_capture_frame_v1" version="1">
+  <interface name="ext_image_copy_capture_frame_v1" version="2">
     <description summary="image capture frame">
       This object represents an image capture frame.
 
@@ -367,6 +367,42 @@
       </description>
       <arg name="reason" type="uint" enum="failure_reason"/>
     </event>
+
+    <event name="capture_time" since="2">
+      <description summary="time at which the source content was sampled">
+        This event reports the time, in CLOCK_MONOTONIC, at which the
+        compositor sampled the source content into the capture buffer
+        for this frame. It is the symmetric counterpart of the
+        presentation_time event on the same interface: presentation_time
+        reports when the frame was or will be presented on its output;
+        capture_time reports when the frame's content was captured.
+
+        Together with the wall-clock time at which the client receives
+        the ready event, this allows the client to determine how much
+        time has elapsed between the source becoming current and the
+        buffer becoming readable, and to embed an accurate source
+        timestamp in any downstream stream encoded from this frame.
+
+        Compositors may emit this event before the ready event.
+        Compositors that cannot determine the sampling time precisely
+        must not send this event; consumers must handle absence
+        gracefully.
+
+        At most one capture_time event is sent per frame. The format of
+        the timestamp matches presentation_time: the seconds part is a
+        64-bit value combined from tv_sec_hi and tv_sec_lo, and tv_nsec
+        is in [0, 999999999].
+
+        This event is informational. It does not change the buffer
+        delivery contract or the meaning of the ready event.
+      </description>
+      <arg name="tv_sec_hi" type="uint"
+           summary="high 32 bits of the seconds part of the timestamp"/>
+      <arg name="tv_sec_lo" type="uint"
+           summary="low 32 bits of the seconds part of the timestamp"/>
+      <arg name="tv_nsec" type="uint"
+           summary="nanoseconds part of the timestamp"/>
+    </event>
   </interface>
 
   <interface name="ext_image_copy_capture_cursor_session_v1" version="1">