diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 6470161..55fff25 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1 +1 @@
-{"trafix":"0.1.1","trafix-codec":"0.0.0","trafix-engine":"0.0.0"}
+{"trafix":"0.1.1","trafix-codec":"0.1.1","trafix-engine":"0.0.0"}
diff --git a/trafix-codec/CHANGELOG.md b/trafix-codec/CHANGELOG.md
new file mode 100644
index 0000000..a247082
--- /dev/null
+++ b/trafix-codec/CHANGELOG.md
@@ -0,0 +1,10 @@
+# Changelog
+
+## 0.1.1 (2025-12-22)
+
+
+### Features
+
+* implement parser for FIX messages ([#15](https://github.com/oxifix/trafix/issues/15)) ([89efcbe](https://github.com/oxifix/trafix/commit/89efcbe8a1dfd733feb4da2600bddc28ee041a0f)), closes [#11](https://github.com/oxifix/trafix/issues/11)
+* implement the initial `Message` encoder ([#21](https://github.com/oxifix/trafix/issues/21)) ([836d4b0](https://github.com/oxifix/trafix/commit/836d4b0154c40ef364457f3f72b72ddc633544af)), closes [#13](https://github.com/oxifix/trafix/issues/13)
+* implement the initial `message` module ([#18](https://github.com/oxifix/trafix/issues/18)) ([8c182dc](https://github.com/oxifix/trafix/commit/8c182dc59af203ad3554fc15a7904a1f927f4787)), closes [#16](https://github.com/oxifix/trafix/issues/16)