diff --git a/.github/workflows/update.yml b/.github/workflows/update.yml
index 5c5abb7..526d0ac 100644
--- a/.github/workflows/update.yml
+++ b/.github/workflows/update.yml
@@ -26,7 +26,7 @@ jobs:
         tagging_message: "v${{ steps.update_data.outputs.version }}"
     - name: Create Release
       run: |
-        pip install -r requirements.txt
+        pip install -r src/requirements.txt
         make release "version=v${{ steps.update_data.outputs.version }}"
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/Makefile b/Makefile
index bd9fd53..4322cbb 100644
--- a/Makefile
+++ b/Makefile
@@ -1,14 +1,21 @@
 SHELL=/bin/bash
 version=`date +%Y.%-m.%-d`
 
-# Build Process
+.SILENT:
 
+check:
+	for cmd in pup jq parallel curl sed;do \
+		command -v $$cmd >/dev/null 2>&1 || { echo >&2 "I require $$cmd but it's not installed.  Aborting."; exit 1; }; \
+	done
+
+# Build Process
 ISIN: INE INF IN9 IN0 IN1 IN2 IN3 IN4
 	cat header.csv IN*.csv > ISIN.csv
 	rm IN*.csv
 
 INE INF IN9 IN0 IN1 IN2 IN3 IN4:
-	./fetch.sh $@
+	./src/fetch.sh $@
+
 update: ISIN
 	echo "::set-output name=version::$(version)"
 	sed -i "s/^version.*/version: $(version)/" CITATION.cff
@@ -24,7 +31,7 @@ old:
 	git show HEAD^:ISIN.csv > /tmp/ISIN.csv
 
 release.md: old
-	python3 diff.py > release.md
+	python3 src/diff.py > release.md
 
 release: release.md
 	gh release create "$(version)" --notes-file release.md ISIN.csv
diff --git a/README.md b/README.md
index a1bef88..13ea067 100644
--- a/README.md
+++ b/README.md
@@ -188,7 +188,15 @@ ISIN|Payload|Check Digit|Validate
 
 # Code
 
-You can run the `fetch.sh` script to generate the tracked the files from scratch. Dependencies:
+You can run the following to generate the `ISIN.csv` file from scratch:
+
+```
+git clone https://github.com/captn3m0/india-isin-data.git
+make check
+make ISIN
+```
+
+## Dependencies:
 
 - https://github.com/ericchiang/pup
 - https://stedolan.github.io/jq/
diff --git a/diff.py b/src/diff.py
similarity index 85%
rename from diff.py
rename to src/diff.py
index 935faa6..059080a 100644
--- a/diff.py
+++ b/src/diff.py
@@ -2,7 +2,7 @@ from csv_diff import load_csv, compare
 import json
 from mako.template import Template
 
-template = Template(filename='release.mako')
+template = Template(filename='src/release.mako')
 
 added,removed,changed = [],[],[]
 
diff --git a/fetch.sh b/src/fetch.sh
similarity index 100%
rename from fetch.sh
rename to src/fetch.sh
diff --git a/header.csv b/src/header.csv
similarity index 100%
rename from header.csv
rename to src/header.csv
diff --git a/release.mako b/src/release.mako
similarity index 100%
rename from release.mako
rename to src/release.mako
diff --git a/requirements.txt b/src/requirements.txt
similarity index 100%
rename from requirements.txt
rename to src/requirements.txt