diff --git a/CHANGELOG.md b/CHANGELOG.md
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--- /dev/null
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@@ -0,0 +1,19 @@
+# Changelog
+
+## [0.2.0](https://github.com/bhklab/ab-testing/compare/v0.1.0...v0.2.0) (2026-08-28)
+
+
+### Features
+
+* add damply variables ([9e3bef6](https://github.com/bhklab/ab-testing/commit/9e3bef69a6871dbf41468904c3f95517252f1244))
+* anat_window input argument and beginning of med-imagetools based pair builder ([f1e932c](https://github.com/bhklab/ab-testing/commit/f1e932c39eb31befdb5301584481283a9891f02c))
+* begin setup of MedSAM2 benchmarking ([e2297d5](https://github.com/bhklab/ab-testing/commit/e2297d5a1cc2165000ce4d04b9dac4e67349ee8c))
+* begin setup of MedSAM2 benchmarking ([e2297d5](https://github.com/bhklab/ab-testing/commit/e2297d5a1cc2165000ce4d04b9dac4e67349ee8c))
+* click cli inputs for medsam2 prepare ([351d299](https://github.com/bhklab/ab-testing/commit/351d2998574bc8c32827e160d2f3b971eab52006))
+* comparing RECIST calculation methods ([bc2d1f3](https://github.com/bhklab/ab-testing/commit/bc2d1f357f1fa6f776bf4b93ae879aef57294ed7))
+* incomplete script to prepare data from MedSAM2 inference ([93fa6bd](https://github.com/bhklab/ab-testing/commit/93fa6bd1bfca700581e77bff640f834cc7f1519c))
+* MedSAM2 nifti to NPZ conversion script ([5458066](https://github.com/bhklab/ab-testing/commit/5458066e117151666b50cf2c5604f70a6bf5fb5c))
+* pair builder using med-imagetools index ([595a10d](https://github.com/bhklab/ab-testing/commit/595a10d09dfcd517f0cf7f30cbb98267e0e66465))
+* ruff allow camelcase to lowercase imports ([0ae1704](https://github.com/bhklab/ab-testing/commit/0ae17043dea7c7a25bab4ad2db8c17531005b1b8))
+* utility functions for mask processing ([6d9cb69](https://github.com/bhklab/ab-testing/commit/6d9cb69ba9ae3fb0dcc27cd8c1dec7a54bca807d))
+* utility script for annotations processing ([0865b73](https://github.com/bhklab/ab-testing/commit/0865b736deca6156ad989f512c03c874d5964e81))
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