diff --git a/CHANGELOG.md b/CHANGELOG.md
index 60ac38f..8563ed2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,17 @@
 # Changelog
 
+## [1.4.0](https://github.com/dkooll/diffy/compare/v1.3.0...v1.4.0) (2025-12-27)
+
+
+### Features
+
+* add tests ([#17](https://github.com/dkooll/diffy/issues/17)) ([96329ec](https://github.com/dkooll/diffy/commit/96329ecc6df16201695343c354fc456fc8a205fd))
+* **deps:** bump actions/checkout from 4 to 6 ([#19](https://github.com/dkooll/diffy/issues/19)) ([6134477](https://github.com/dkooll/diffy/commit/6134477f63f7b5690735aa8871256f095251b86a))
+* **deps:** bump actions/setup-go from 5 to 6 ([#21](https://github.com/dkooll/diffy/issues/21)) ([2bf2c18](https://github.com/dkooll/diffy/commit/2bf2c18db324769bc9218b977c64a7904689bd9f))
+* **deps:** bump actions/upload-artifact from 4 to 6 ([#22](https://github.com/dkooll/diffy/issues/22)) ([ba47f63](https://github.com/dkooll/diffy/commit/ba47f636e943c4b020953f74261512fe564acbb5))
+* **deps:** bump github.com/google/go-cmp from 0.6.0 to 0.7.0 ([#20](https://github.com/dkooll/diffy/issues/20)) ([0a9a34b](https://github.com/dkooll/diffy/commit/0a9a34b6ae3ed28f97860d35f98a528fc37f6153))
+* **deps:** bump github.com/zclconf/go-cty from 1.16.2 to 1.17.0 ([#24](https://github.com/dkooll/diffy/issues/24)) ([d7f155b](https://github.com/dkooll/diffy/commit/d7f155b3e80734f3e287dd1266db1a96aa8424e4))
+
 ## [1.3.0](https://github.com/dkooll/diffy/compare/v1.2.0...v1.3.0) (2025-10-25)