diff --git a/CHANGELOG.md b/CHANGELOG.md
index adf2c58..6381ccd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,26 @@
 
 All notable changes to PyTheory are documented here.
 
+## 0.33.0
+
+- **Non-12-TET support** — `TET(n)` factory creates any equal temperament
+- **11 microtonal systems:**
+  - `"shruti"` (22-TET Indian, 10 thaats with proper shruti intervals)
+  - `"maqam"` (24-TET Arabic, quarter-tone Rast/Bayati/Hijaz + 7 more)
+  - `"slendro"` (5-TET gamelan), `"pelog"` (9-TET gamelan with 3 pathet)
+  - `"thai"` (7-TET, 171 cents/step)
+  - `"makam"` (53-TET Turkish Arel-Ezgi-Uzdilek, 9 makams)
+  - `"carnatic"` (72-TET, 10 melakartas)
+  - `"19-tet"`, `"31-tet"` (historical Western)
+  - `"bohlen-pierce"` (13 divisions of the tritave 3:1 — non-octave!)
+- **Just intonation** — `temperament="just"` for pure 5-limit ratios
+- **Historical pitch** — `Score(reference_pitch=415.0)` for Baroque A=415
+- **`Score(system=, temperament=, reference_pitch=)`** flows through to all playback
+- Per-system `c_index` and `period` replace hardcoded constants
+- Fixed all hardcoded `12`s in tone arithmetic
+- Song #22: Greensleeves (Renaissance lute, meantone, A=415)
+- 22 new microtonal tests (819 total)
+
 ## 0.32.1
 
 - `Tone("X")` now raises `ValueError` immediately instead of silently accepting invalid names (#39)
diff --git a/pyproject.toml b/pyproject.toml
index 1c12168..280861f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "pytheory"
-version = "0.32.0"
+version = "0.33.0"
 description = "Music Theory for Humans"
 readme = "README.md"
 license = "MIT"
diff --git a/pytheory/__init__.py b/pytheory/__init__.py
index 07bb9f0..dab8e49 100644
--- a/pytheory/__init__.py
+++ b/pytheory/__init__.py
@@ -1,6 +1,6 @@
 """PyTheory: Music Theory for Humans."""
 
-__version__ = "0.32.0"
+__version__ = "0.33.0"
 
 from .tones import Tone, Interval
 from .systems import System, SYSTEMS, TET
diff --git a/uv.lock b/uv.lock
index f6db8ad..e3099ae 100644
--- a/uv.lock
+++ b/uv.lock
@@ -707,7 +707,7 @@ wheels = [
 
 [[package]]
 name = "pytheory"
-version = "0.32.0"
+version = "0.33.0"
 source = { editable = "." }
 dependencies = [
     { name = "numeral" },