diff --git a/docs/dg/architecture.md b/docs/dg/architecture.md
index f337ae6f74..500da0330e 100644
--- a/docs/dg/architecture.md
+++ b/docs/dg/architecture.md
@@ -29,6 +29,7 @@
 [`Git`](https://github.com/reposense/RepoSense/blob/master/src/main/java/reposense/git) package contains the wrapper classes for respective *git* commands.
  * [`GitBlame`](https://github.com/reposense/RepoSense/blob/master/src/main/java/reposense/git/GitBlame.java): Wrapper class for `git blame` functionality. Traces the revision and author last modified each line of a file.
  * [`GitBranch`](https://github.com/reposense/RepoSense/blob/master/src/main/java/reposense/git/GitBranch.java): Wrapper class for `git branch` functionality. Gets the name of the working branch of the target repo.
+ * [`GitCatFile`](https://github.com/reposense/RepoSense/blob/master/src/main/java/reposense/git/GitCatFile.java): Wrapper class for `git cat-file` functionality. Obtains the parent commit hash with the given commit indicated by the commit hash.
  * [`GitCheckout`](https://github.com/reposense/RepoSense/blob/master/src/main/java/reposense/git/GitCheckout.java): Wrapper class for `git checkout` functionality. Checks out the repository by branch name or commit hash.
  * [`GitClone`](https://github.com/reposense/RepoSense/blob/master/src/main/java/reposense/git/GitClone.java): Wrapper class for `git clone` functionality. Clones the repository from *GitHub* into a temporary folder in order to run the analysis.
  * [`GitDiff`](https://github.com/reposense/RepoSense/blob/master/src/main/java/reposense/git/GitDiff.java): Wrapper class for `git diff` functionality. Obtains the changes between commits.
@@ -37,6 +38,7 @@
  * [`GitRevList`](https://github.com/reposense/RepoSense/blob/master/src/main/java/reposense/git/GitRevList.java): Wrapper class for `git rev-list` functionality. Retrieves the commit objects in reverse chronological order.
  * [`GitRevParse`](https://github.com/reposense/RepoSense/blob/master/src/main/java/reposense/git/GitRevParse.java): Wrapper class for `git rev-parse` functionality. Ensures that the branch of the repo is to be analyzed exists.
  * [`GitShortlog`](https://github.com/reposense/RepoSense/blob/master/src/main/java/reposense/git/GitShortlog.java): Wrapper class for `git shortlog` functionality. Obtains the list of authors who have contributed to the target repo.
+ * [`GitShow`](https://github.com/reposense/RepoSense/blob/master/src/main/java/reposense/git/GitShow.java): Wrapper class for `git show` functionality. Gets the date of the commit with the commit hash.
  * [`GitUtil`](https://github.com/reposense/RepoSense/blob/master/src/main/java/reposense/git/GitUtil.java): Contains helper functions used by the other Git classes above.
  * [`GitVersion`](https://github.com/reposense/RepoSense/blob/master/src/main/java/reposense/git/GitVersion.java): Wrapper class for `git --version` functionality. Obtains the current git version of the environment that RepoSense is being run on.