diff --git a/python/lsst/obs/base/exposureIdInfo.py b/python/lsst/obs/base/exposureIdInfo.py
index 18ed9a65..f2a1cde9 100644
--- a/python/lsst/obs/base/exposureIdInfo.py
+++ b/python/lsst/obs/base/exposureIdInfo.py
@@ -29,8 +29,9 @@
 from lsst.daf.butler import DataCoordinate
 
 
+# TODO: remove on DM-38687.
 @deprecated(
-    "Deprecated in favor of `lsst.meas.base.IdGenerator`; will be removed after v27.",
+    "Deprecated in favor of `lsst.meas.base.IdGenerator`; will be removed after v26.",
     version="v26",
     category=FutureWarning,
 )