diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 0967ef4..11fea0f 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1 +1 @@
-{}
+{".":"1.0.0"}
diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..96854c3
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,65 @@
+# Changelog
+
+## 1.0.0 (2023-12-29)
+
+## What's Changed
+* build: basic Go Earthly build tool by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/1
+* Accounts API by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/2
+* feat: log level CLI parameter and env var by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/3
+* refactor: using GitHub URL in module name by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/4
+* refactor: splitting existing functionality into packages by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/5
+* feat: parsing accounts API response by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/6
+* fix: adding strict JSON decoding by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/7
+* fix: checking API calls HTTP status code by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/8
+* feat: querying transactions API by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/9
+* refactor: transactions same layout as accounts package by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/10
+* refactor: splitting accounts JSON parsing and logic by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/12
+* feat: parsing transactions api response by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/11
+* docs: adding language choice reasoning by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/13
+* docs: adding snapshot testing improvement by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/14
+* feat: savings goals API querying by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/15
+* refactor: improving and adding logs by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/16
+* refactor: Accounts API method optimisations by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/17
+* feat: creating round up savings goal if not one by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/18
+* fix: created savings goal uses account currency by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/19
+* refactor: moving to round up operations model by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/20
+* feat: performing savings goal round up transfer by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/21
+* refactor: adding log level setting logs by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/22
+* fix: setting logging formatting before first log by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/23
+* Docs by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/24
+* Docs by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/25
+* Cicd by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/26
+* ci: testing earthly image usage by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/27
+* ci: adding mirror to GitLab workflow by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/28
+* 01 25 ci adding mirror to git lab workflow by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/29
+* Cicd by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/30
+* ci: Earthly environment variable to force colour by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/31
+* ci: only mirroring on main by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/32
+* docs: adding a CI status badge by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/33
+* docs: adding AGPLv3 license by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/34
+* ci: adding conventional commits workflow by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/35
+* cicd by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/36
+* ci: adding convention commit next version checking by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/37
+* ci: adding clean_git_history checking stage by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/38
+* ci: seperatring GitHub workflow linting to own workflow by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/39
+* CICD by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/40
+* refactor: conventional-commits-linting migration to Earthly by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/41
+* refactor: conventional-commits-next-version migration to Earthly by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/42
+* Linting by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/48
+* build: moving GitHub Actions Linting to Earthly by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/49
+* Shell linting by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/50
+* Mirroring by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/51
+* Ci by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/52
+* build: bumping the Go version to 1.20.4 by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/53
+* build: pinning rust base image used by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/54
+* Ci by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/55
+* Ci by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/56
+* Yamlfmt by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/62
+* build: upgrading to Earthly v0.7.17 by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/66
+* ci: testing GitHub job naming by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/65
+* build: renaming sh abbreviation to shell by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/74
+* Cicd by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/75
+* ci: upgrading to actionlint@v1.6.26 by @DeveloperC286 in https://github.com/DeveloperC286/starlingbanktechnicalchallenge/pull/77
+
+
+**Full Changelog**: https://github.com/DeveloperC286/starlingbanktechnicalchallenge/commits/v1.0.0