diff --git a/Makefile b/Makefile
index fc1a72c..8c62f69 100644
--- a/Makefile
+++ b/Makefile
@@ -101,6 +101,9 @@ dist: clean ## builds source and wheel package
 install: clean ## install the package to the active Python's site-packages
 	python setup.py install
 
+req: 
+	pipreqs ./src/qfmu --savepath ./requirements.txt
+
 format: 
 	isort .
 	black .
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
index f14dcbd..193a6b0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,6 @@
-numpy
-scipy
-jinja2
-pydantic
-typer[all]
\ No newline at end of file
+annotated_types==0.6.0
+Jinja2==3.1.2
+numpy==1.24.4
+scipy==1.10.1
+typer==0.9.0
+typing_extensions==4.8.0
diff --git a/requirements_dev.txt b/requirements_dev.txt
index feb009f..a36b0dd 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -11,4 +11,5 @@ twine
 build
 wheel
 bump2version
-mypy
\ No newline at end of file
+mypy
+pipreqs
\ No newline at end of file