diff --git a/.python-version b/.python-version
new file mode 100644
index 0000000..bd28b9c
--- /dev/null
+++ b/.python-version
@@ -0,0 +1 @@
+3.9
diff --git a/Aptfile b/Aptfile
new file mode 100644
index 0000000..5664e30
--- /dev/null
+++ b/Aptfile
@@ -0,0 +1 @@
+git
diff --git a/RELEASE.md b/RELEASE.md
index f738985..ef0fb79 100644
--- a/RELEASE.md
+++ b/RELEASE.md
@@ -19,8 +19,13 @@ The commands below assume a production application named `dbt-hubcap`. Replace w
     - Job: `python3 hubcap.py`
     - Schedule: Every hour at :00
     - Dyno size: Hobby / Standard-1X
-1. Configure the `CONFIG` environment variable: [Settings > Config Vars > Reveal Config Vars](https://dashboard.heroku.com/apps/dbt-hubcap/settings)
+1. Configure environment variables: [Settings > Config Vars > Reveal Config Vars](https://dashboard.heroku.com/apps/dbt-hubcap/settings)
     - `CONFIG`: copy format from `config.example.json` and adjust values as needed
+    - `GIT_EXEC_PATH`: `/app/.apt/usr/lib/git-core`
+1. Setup `git` to be available at app run time. See [these](https://devcenter.heroku.com/articles/heroku-24-stack#changes-to-git) instructions for context.
+    ```shell
+    heroku buildpacks:add --index 1 heroku-community/apt --app dbt-hubcap
+    ```
 1. (Re-)deploy the application using the instructions below. See [these](https://dashboard.heroku.com/apps/dbt-hubcap/deploy/heroku-git) instructions for context.
 
 
diff --git a/hub.json b/hub.json
index 598b71c..636d140 100644
--- a/hub.json
+++ b/hub.json
@@ -67,7 +67,8 @@
         "materialize-dbt-utils"
     ],
     "Matts52": [
-        "dbt-ml-inline-preprocessing"
+        "dbt-ml-inline-preprocessing",
+        "dbt-set-similarity"
     ],
     "Montreal-Analytics": [
         "dbt-snowflake-utils"
@@ -349,7 +350,8 @@
         "dbt-data-diff",
         "dbt-snowflake-evaluator",
         "dbt-tags",
-        "dbt-alert"
+        "dbt-alert",
+        "dbt-audit-helper-ext"
     ],
     "irvingpop": [
         "dbt_otel_export"
diff --git a/runtime.txt b/runtime.txt
deleted file mode 100644
index aaf66d8..0000000
--- a/runtime.txt
+++ /dev/null
@@ -1 +0,0 @@
-python-3.9.15