diff --git a/.gitignore b/.gitignore
index f6a4cc87..b7178ef8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,3 +9,4 @@ stock*.pkl
 results*.pkl
 *.spec
 .DS_Store
+.history/
\ No newline at end of file
diff --git a/Makefile b/Makefile
new file mode 100644
index 00000000..68313901
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,30 @@
+build:
+	docker build -t screeni-py .
+
+run:
+	docker run -d --name screeni-py -p 8501:8501 screeni-py
+
+interactive-run:
+	docker run -p 8501:8501 screeni-py
+
+shell:
+	docker run -it --entrypoint /bin/bash screeni-py
+
+stop-container:
+	@if [ "$(shell docker ps -q -f name=screeni-py)" ]; then \
+		docker stop screeni-py; \
+	else \
+		echo "Container screeni-py is not running."; \
+	fi
+
+remove-container:
+	@if [ "$(shell docker ps -a -q -f name=screeni-py)" ]; then \
+		docker rm screeni-py; \
+	else \
+		echo "Container screeni-py does not exist."; \
+	fi
+
+system-clean:
+	docker system prune --force
+
+rebuild: stop-container remove-container build system-clean
diff --git a/src/classes/Changelog.py b/src/classes/Changelog.py
index 891a3dc9..d89343ca 100644
--- a/src/classes/Changelog.py
+++ b/src/classes/Changelog.py
@@ -7,7 +7,7 @@
 
 from classes.ColorText import colorText
 
-VERSION = "2.20"
+VERSION = "2.21"
 
 changelog = colorText.BOLD + '[ChangeLog]\n' + colorText.END + colorText.BLUE + '''
 [1.00 - Beta]
@@ -287,4 +287,7 @@
 
 [2.20]
 1. Bugfixes - Clear cache button random key added to fix re-rendering issues
+
+[2.21]
+1. Dependency updated - `advanced-ta` lib for bugfixes and performance improvement in Lorentzian Classifier
 ''' + colorText.END