diff --git a/CHANGELOG.md b/CHANGELOG.md
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+# Changelog
+
+## [0.2.0](https://github.com/bhklab/aaura-bench-preprocess/compare/v0.1.0...v0.2.0) (2026-01-12)
+
+
+### Features
+
+* add append index handling, not completely working yet, add some logging ([c02375a](https://github.com/bhklab/aaura-bench-preprocess/commit/c02375a335bb611ad3e8eeec2045a0f789fd0191))
+* add disease site input for process to handle data dir organization including that, update docstring with all inputs ([b4274f2](https://github.com/bhklab/aaura-bench-preprocess/commit/b4274f22933775435c64888eda98df0fafadc6ee))
+* add functionality for masks with multiple volumes ([9b671c8](https://github.com/bhklab/aaura-bench-preprocess/commit/9b671c801ef33e84b178a06148bea583e1085561))
+* add handling for disease site in data directory structure ([0bf9364](https://github.com/bhklab/aaura-bench-preprocess/commit/0bf93644a6347d3e24f32f0fcc31614b796c52ac))
+* add handling of masks with no labels ([9ae9cc8](https://github.com/bhklab/aaura-bench-preprocess/commit/9ae9cc8e7abcf262583eca35cbf1a8faec558aad))
+* add mask_voxel_label to aaura index ([03daa24](https://github.com/bhklab/aaura-bench-preprocess/commit/03daa24eb639affad8a46e40dd369904498900d8))
+* add multiple mask modality handling, dataset suffix and prefixes for handling OCSCC RADCURE ([d2da3d6](https://github.com/bhklab/aaura-bench-preprocess/commit/d2da3d607a4e322fcb53ad0da2b4febd51cc8a1f))
+* add parallel processing ([98fa575](https://github.com/bhklab/aaura-bench-preprocess/commit/98fa57591d717cdea6810f1fa751dcba529857b3))
+* developed the rest of the main process pipeline ([467966d](https://github.com/bhklab/aaura-bench-preprocess/commit/467966d5a2fd8ef3814e74c9d28f4e39c0e91de5))
+* main data processing of nifti images for aaura benchmarking prep ([1588fff](https://github.com/bhklab/aaura-bench-preprocess/commit/1588fff0e8dd12a754b7796acb042daef213d3cc))
+* make utility scripts for functions ([2290c2f](https://github.com/bhklab/aaura-bench-preprocess/commit/2290c2ffbd24180424d7250e27355c1201e56de3))
+* script to debug lesionlocator samples having no label 1 ([6600e19](https://github.com/bhklab/aaura-bench-preprocess/commit/6600e19ef5c32940875c5f582389bb8f97e3aea5))
+* script to take mit_index and generate aaura_index ([bd78e91](https://github.com/bhklab/aaura-bench-preprocess/commit/bd78e91150b36d5027c1d4690ff6922004b1a654))
+* start developing data preprocessing code for aaura benchmarking ([cfe91e1](https://github.com/bhklab/aaura-bench-preprocess/commit/cfe91e1c614d63c30395ea840ebcc2403b1cc481))
+
+
+### Bug Fixes
+
+* add logger setup ([158bd6c](https://github.com/bhklab/aaura-bench-preprocess/commit/158bd6c90bfa7cde7b225ee70fce12a6e7f90e75))
+* add logging import ([0cc6a0c](https://github.com/bhklab/aaura-bench-preprocess/commit/0cc6a0ca4811b196859e6be4f3a8f910b4464f95))
+* correct mask loading with updated mask_path setup ([6fccc2e](https://github.com/bhklab/aaura-bench-preprocess/commit/6fccc2ea97084f239f38719191417438fa9c3b2f))
diff --git a/version.txt b/version.txt
index 8a9ecc2..0ea3a94 100644
--- a/version.txt
+++ b/version.txt
@@ -1 +1 @@
-0.0.1
\ No newline at end of file
+0.2.0