diff --git a/README.md b/README.md
index c221e2a..7489c6b 100644
--- a/README.md
+++ b/README.md
@@ -134,6 +134,9 @@ Milestones 2–4 are released as `v0.2.0` (27 October 2026) and Milestone 5 as `
 code but reports version 0.2.0, as its `pyproject.toml` was not updated; use `v0.3.1`.
 `v0.3.2` (30 October 2026) refuses a `plane_histograms.csv` row whose `plane_id`, `image_file`
 or `bit_depth` disagrees with its other columns (#18).
+`v0.3.3` (3 November 2026) refuses corrupt or ambiguous statistics and parameters instead
+of using them (issues #25, #26, #31, #36–#38, #42–#48); valid inputs give bit-identical
+results. See [Migrating to v0.3.3](#migrating-to-v033).
 
 Milestone 5 added a robust histogram range for histograms that are not exact (float planes,
 and integer planes with more values than bins), for issue #12 (decisions N54–N60):
@@ -161,6 +164,37 @@ histogram, check = histogram_with_range_check(lambda: (plane,), plane.dtype, set
 warnings = range_check_issues([("img.tif::z=0,t=0", 0, check)])
 ```
 
+### Migrating to v0.3.3
+
+No valid statistics change: on the same inputs, histograms, `plane_histograms.csv` bytes,
+pooled statistics, fitted parameters and normalized pixels are bit-identical to `v0.3.2`.
+These inputs are now refused with `ValueError` (`CsvFormatError` when read from the file):
+
+- **Pixel blocks:** a non-empty block of another pixel type than the plane's. A block in the
+  other byte order (big-endian TIFF) is now converted by value; 16-bit ones were misread.
+- **Histograms:** negative or wrapping bin counts, `valid > total`, missing or disordered
+  intensity limits on a plane with valid pixels, NaN or impossible underflow/overflow sums.
+  `PlaneHistogram.counts` must be a one-dimensional int64 array.
+- **Tables:** a `plane_histograms.csv` with the header but no rows; two rows with the same
+  `plane_id` (also refused by `write_plane_histograms`, `scope_groups`, `fit` and
+  `image_summaries`).
+- **Plane coordinates:** `PlaneRecord` `z` and `t` must be whole numbers 0 or above (`None`
+  is still 0); booleans, floats (even `1.0`), text and negative values are refused.
+- **Repeat groups:** `repeat_groups` that put two biological repeats of one condition in one
+  repeat group, or give a present pair an empty or non-text label.
+- **Pooling:** a group of more than 2**63 − 1 finite pixels. Counts above 2**53 are now
+  exact.
+- **Parameters:** a non-finite offset or a scale that is not finite and above 0
+  (`Parameters`, `NormalizationParameters`); a channel index that is not a whole number 0 or
+  above (booleans, `1.0`, `"1"` are no longer truncated).
+- **`Parameters.from_columns`:** a `normalization_scope` that is not a scope, or that differs
+  from `settings.scope` (#37). Pass the settings of the run that wrote the row, scope included,
+  e.g. `NormalizationSettings(method=..., percentile=..., scope=run_scope)`.
+- **Summaries:** `ImageSummary.exact` (`Histogram_Exact_C<i>`) is `None`, not `True`, for a
+  channel without finite pixels. The new `unchecked_channels(summaries)` returns a
+  `channel_without_finite_pixels` warning for each such channel; `intensity_checks` still
+  returns its four codes only, so calling bricks add the new code themselves (#57).
+
 ## Installation
 
 ```bash
diff --git a/docs/plan.md b/docs/plan.md
index f41974b..cdfce4a 100644
--- a/docs/plan.md
+++ b/docs/plan.md
@@ -269,6 +269,11 @@ their formula is implemented here.
 - **Release `v0.3.2`** (30 October 2026): the statistics reader checks the stored `plane_id`,
   `image_file` and `bit_depth` of each row against its other columns (#18, from the data-flow
   audit, preprocessing #39). Pinned by preprocessing from its `v0.3.2`.
+- **Release `v0.3.3`** (3 November 2026): the bucket-A integrity fixes (#61, #62, #63):
+  corrupt pixel blocks, histograms, tails, tables, plane coordinates, repeat groups,
+  parameters and parameter scopes are refused; pooled counts are exact above 2**53; a channel
+  without finite pixels is not marked exact and is reported by `unchecked_channels`. Valid
+  inputs give bit-identical outputs. Migration notes in the README.
 - **Then:** the preprocessing follow-up, then the CellPatcher follow-up (N6). Preprocessing
   steps P2 and P3 do not depend on this brick and may start earlier; its step P3b (writing
   schema version 3) follows Milestone 2b. From `v0.2.0` on, the other bricks pin the tag
diff --git a/pyproject.toml b/pyproject.toml
index e2f7792..3e405c0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "morphobricks-normalization"
-version = "0.3.2"
+version = "0.3.3"
 description = "MorphoBricks normalization brick: per-plane statistics, their file formats, and normalization methods for microscopy images."
 readme = "README.md"
 license = "MIT"