diff --git a/poetry.lock b/poetry.lock
--- a/poetry.lock
+++ b/poetry.lock
@@ -206,10 +206,18 @@ brotli = ["brotlipy (>=0.6.0)"]
 secure = ["pyOpenSSL (>=0.14)", "cryptography (>=1.3.4)", "idna (>=2.0.0)", "certifi", "ipaddress"]
 socks = ["PySocks (>=1.5.6,!=1.5.7,<2.0)"]
 
+[[package]]
+name = "vermin"
+version = "1.3.3"
+description = "Concurrently detect the minimum Python versions needed to run code"
+category = "dev"
+optional = false
+python-versions = ">=2.7"
+
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.10"
-content-hash = "14f945aef88b635fa5d4cc1f329572834551d8fb4fe0c7cbbbcfa419bbec84a7"
+content-hash = "e73abda5748e52a1074f136fa035a8e427d57dd92ba4983c81141974a97dc25e"
 
 [metadata.files]
 black = [
@@ -323,3 +331,6 @@ urllib3 = [
     {file = "urllib3-1.26.8-py2.py3-none-any.whl", hash = "sha256:000ca7f471a233c2251c6c7023ee85305721bfdf18621ebff4fd17a8653427ed"},
     {file = "urllib3-1.26.8.tar.gz", hash = "sha256:0e7c33d9a63e7ddfcb86780aac87befc2fbddf46c58dbb487e0855f7ceec283c"},
 ]
+vermin = [
+    {file = "vermin-1.3.3-py2.py3-none-any.whl", hash = "sha256:c5bd8bf2026d87563332293a0479606954bd973d8cf72ab370e1164a019c0524"},
+]
diff --git a/pyproject.toml b/pyproject.toml
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -14,6 +14,7 @@ rich = "^11.2.0"
 mypy = "^0.931"
 black = "^22.1.0"
 isort = "^5.10.1"
+vermin = "^1.3.3"
 
 [build-system]
 requires = ["poetry-core>=1.0.0"]
diff --git a/stockcli/stock.py b/stockcli/stock.py
--- a/stockcli/stock.py
+++ b/stockcli/stock.py
@@ -1,6 +1,6 @@
 import logging
 from operator import itemgetter
-from typing import Any
+from typing import Any, Dict, List
 
 from rich.panel import Panel
 from rich.table import Table
@@ -12,16 +12,14 @@ from .style import GreenBoldText
 
 def get_info_by_barcode(barcode: str) -> None:
 
-    product = utils.get_request(
-        f"stock/products/by-barcode/{barcode}"
-    )  # type: dict[str, Any]
+    product = utils.get_request(f"stock/products/by-barcode/{barcode}")
 
     inner_product = product["product"]
     product_id = inner_product["id"]
 
     product_group = utils.get_request(
         f"objects/product_groups/{inner_product['product_group_id']}"
-    )  # type: dict[str, Any]
+    )
 
     grid = Table.grid(padding=DEFAULT_PADDING)
     grid.add_column(justify="left", no_wrap=True)
@@ -44,7 +42,7 @@ def get_info_by_barcode(barcode: str) ->
 
     purchase_to_stock_conversion = utils.get_request(
         f"objects/quantity_unit_conversions?query[]=from_qu_id={purchase_quantity_unit['id']}&query[]=to_qu_id={stock_quantity_unit['id']}"
-    )  # type: list[dict[str, Any]]
+    )
 
     if len(purchase_to_stock_conversion) != 0:
         conversion = f"{purchase_to_stock_conversion[0]['factor']} {stock_quantity_unit['name_plural']}"
@@ -66,9 +64,7 @@ def get_info_by_barcode(barcode: str) ->
 
     if stock_amount > 0:
         grid.add_row(GreenBoldText("Locations:"))
-        locations = utils.get_request(
-            f"stock/products/{product_id}/locations"
-        )  # type: list[dict[str, Any]]
+        locations = utils.get_request(f"stock/products/{product_id}/locations")
 
         for location in sorted(locations, key=itemgetter("location_name")):
             grid.add_row(
@@ -83,17 +79,13 @@ def get_info_by_barcode(barcode: str) ->
 
 def transfer_by_barcode(barcode: str) -> None:
 
-    product = utils.get_request(
-        f"stock/products/by-barcode/{barcode}"
-    )  # type: dict[str, Any]
+    product = utils.get_request(f"stock/products/by-barcode/{barcode}")
 
     inner_product = product["product"]
     product_id = inner_product["id"]
 
-    locations = utils.get_request(
-        f"stock/products/{product_id}/locations"
-    )  # type: list[dict[str, Any]]
-    all_locations = utils.get_request("objects/locations")  # type: list[dict[str, Any]]
+    locations = utils.get_request(f"stock/products/{product_id}/locations")
+    all_locations = utils.get_request("objects/locations")
 
     grid = Table.grid(padding=DEFAULT_PADDING)
     grid.add_column(justify="right", no_wrap=True)
@@ -172,18 +164,14 @@ def transfer_by_barcode(barcode: str) ->
 
     data = {"amount": amount, "location_id_from": from_id, "location_id_to": to_id}
 
-    response = utils.post_request(
-        f"stock/products/by-barcode/{barcode}/transfer", data
-    )  # type: dict[str, Any]
+    response = utils.post_request(f"stock/products/by-barcode/{barcode}/transfer", data)
     console.print("Successfully transfered!")
     return
 
 
 def add_by_barcode(barcode: str) -> None:
 
-    product = utils.get_request(
-        f"stock/products/by-barcode/{barcode}"
-    )  # type: dict[str, Any]
+    product = utils.get_request(f"stock/products/by-barcode/{barcode}")
 
     inner_product = product["product"]
     product_id = inner_product["id"]
@@ -209,18 +197,14 @@ def add_by_barcode(barcode: str) -> None
 
     data = {"amount": amount, "transaction_type": "purchase"}
 
-    response = utils.post_request(
-        f"stock/products/by-barcode/{barcode}/add", data
-    )  # type: dict[str, Any]
+    response = utils.post_request(f"stock/products/by-barcode/{barcode}/add", data)
     console.print("Successfully added!")
     return
 
 
 def update_by_barcode(barcode: str) -> None:
 
-    product = utils.get_request(
-        f"stock/products/by-barcode/{barcode}"
-    )  # type: dict[str, Any]
+    product = utils.get_request(f"stock/products/by-barcode/{barcode}")
 
     inner_product = product["product"]
     product_id = inner_product["id"]
@@ -250,8 +234,6 @@ def update_by_barcode(barcode: str) -> N
         "new_amount": amount,
     }
 
-    response = utils.post_request(
-        f"stock/products/{product_id}/inventory", data
-    )  # type: dict[str, Any]
+    response = utils.post_request(f"stock/products/{product_id}/inventory", data)
     console.print("Successfully updated!")
     return