diff --git a/CHANGES b/CHANGES
index 2b0264d..70fd047 100755
--- a/CHANGES
+++ b/CHANGES
@@ -1,6 +1,9 @@
 Change log
 ===========
 
+v01_42_00 [20260121] (sxy1439@mavs.uta.edu)
+ * Added updated YZ non-uniformity maps 'yz_data2025_v10_14_02.root' and 'yz_mc2025_v10_14_02.root' to YZmaps 
+
 v01_35_00 [20250911] (asanchezcastillo@ugr.es)
  * Modified `pds_calibration.db` to include new attributes. 
 
diff --git a/README b/README
index e69e2f7..0818173 100755
--- a/README
+++ b/README
@@ -21,6 +21,7 @@ The content is:
 * `CNNHitClassification/`: contains weights for CNN hit classification
 * `CVN/`: contains model for CVN neutrino flavor classification
 * `WireMod/`: contains spline files for WireMod systematics
+* `YZmaps/`: contains YZ non-uniformity maps to equalize the charge response
 * `README`: a short description of the content of the package; it is in Markdown format, because why not _(this file)_
 * `CHANGES`: a list of the changes to the content: **please update this whenever you change the content!** This is the only way we have to track it.
 * `ups/`: contains the magics for this to be a legit UPS product; usually no need to change it
diff --git a/YZmaps/yz_data2025_v10_14_02.root b/YZmaps/yz_data2025_v10_14_02.root
new file mode 100644
index 0000000..fd69fa9
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diff --git a/YZmaps/yz_mc2025_v10_14_02.root b/YZmaps/yz_mc2025_v10_14_02.root
new file mode 100644
index 0000000..189e444
Binary files /dev/null and b/YZmaps/yz_mc2025_v10_14_02.root differ