diff --git a/docs/md/snapshots.md b/docs/md/snapshots.md
index 4b8a41b..726e5d9 100644
--- a/docs/md/snapshots.md
+++ b/docs/md/snapshots.md
@@ -18,4 +18,8 @@ pytest_plugins = [ "modflow_devtools.snapshots" ]
 
 ## Disable snapshots
 
-Snapshot comparisons can be disabled by invoked `pytest` with the `--snapshot-disable` flag.
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+Snapshot comparisons can be disabled by invoked `pytest` with the `--snapshot-disable` flag.
+
+## Caveats & gotchas
+
+NumPy major versions may introduce changes to `np.save()`'s binary format, causing binary array snapshot failures for arrays with object dtypes. To avoid this, check object (e.g. string) columns explicitly and then omit them from the comparison array.
\ No newline at end of file