diff --git a/slpkg/dependees.py b/slpkg/dependees.py
index b8d5cb36..0be3981d 100644
--- a/slpkg/dependees.py
+++ b/slpkg/dependees.py
@@ -41,7 +41,7 @@ class Dependees(Configs, Utilities):
         if self.ponce_repo:
             self.sbo_table = PonceTable
 
-    def slackbuilds(self):
+    def slackbuilds(self) -> None:
         """ Collecting the dependees. """
         print(f"The list below shows the "
               f"packages that dependees on '{', '.join([p for p in self.packages])}':\n")
diff --git a/slpkg/dialog_box.py b/slpkg/dialog_box.py
index fa90c12e..8fb16c22 100644
--- a/slpkg/dialog_box.py
+++ b/slpkg/dialog_box.py
@@ -4,7 +4,7 @@
 import locale
 from dialog import Dialog
 from pathlib import Path
-from typing import Union
+from typing import Union, Tuple
 
 from slpkg.configs import Configs
 from slpkg.views.version import Version
@@ -22,7 +22,7 @@ class DialogBox(Configs):
         self.d.set_background_title(f'{self.prog_name} {Version().version} - Software Package Manager')
 
     def checklist(self, text: str, packages: list, title: str, height: int, width: int,
-                  list_height: int, choices: list):
+                  list_height: int, choices: list) -> Tuple[bool, list]:
         """ Display a checklist box. """
         more_kwargs: dict = {}
 
@@ -37,7 +37,7 @@ class DialogBox(Configs):
 
         return code, tags
 
-    def mixedform(self, text: str, title: str, elements: list, height: int, width: int):
+    def mixedform(self, text: str, title: str, elements: list, height: int, width: int) -> Tuple[bool, list]:
         """ Display a mixedform box. """
         more_kwargs: dict = {}
 
@@ -54,12 +54,12 @@ class DialogBox(Configs):
 
         return code, tags
 
-    def msgbox(self, text: str, height: int, width: int):
+    def msgbox(self, text: str, height: int, width: int) -> None:
         """ Display a message box. """
         if self.dialog:
             self.d.msgbox(text, height, width)
 
-    def textbox(self, text: Union[str, Path], height: int, width: int):
+    def textbox(self, text: Union[str, Path], height: int, width: int) -> None:
         """ Display a text box. """
         if self.dialog:
             self.d.textbox(text, height, width)
diff --git a/slpkg/downloader.py b/slpkg/downloader.py
index 9f2a30c5..06eeb4b3 100644
--- a/slpkg/downloader.py
+++ b/slpkg/downloader.py
@@ -22,7 +22,7 @@ class Downloader(Configs):
 
         self.flag_parallel: list = ['-P', '--parallel']
 
-    def download(self):
+    def download(self) -> None:
         """ Starting the processing for downloading. """
         process: list = []
 
diff --git a/slpkg/form_configs.py b/slpkg/form_configs.py
index 648a88da..3b66eb0b 100644
--- a/slpkg/form_configs.py
+++ b/slpkg/form_configs.py
@@ -21,7 +21,7 @@ class FormConfigs(Configs):
         self.orig_configs: list = []
         self.config_file = Path(self.etc_path, f'{self.prog_name}.toml')
 
-    def is_dialog_enabled(self):
+    def is_dialog_enabled(self) -> None:
         """ Checking if the dialog box is enabled by the user. """
         if not self.dialog:
             self.utils.raise_error_message(f"You should enable the dialog "
diff --git a/slpkg/main.py b/slpkg/main.py
index ec39c9f7..f7e8dc95 100644
--- a/slpkg/main.py
+++ b/slpkg/main.py
@@ -266,7 +266,7 @@ class Argparse(Configs):
         self.move_options()
         self.invalid_options()
 
-    def invalid_options(self):
+    def invalid_options(self) -> None:
         """ Checks for invalid options. """
         invalid: list = []
         commands: list = []
@@ -295,7 +295,7 @@ class Argparse(Configs):
 
         # Fixed for correct options by command.
         try:
-            options = self.commands[self.args[0]]
+            options: list = self.commands[self.args[0]]
             for opt in self.flags:
                 if opt not in options:
                     invalid.append(opt)
@@ -361,9 +361,9 @@ class Argparse(Configs):
             else:
                 new_args.append(opt)
 
-        self.args = new_args
+        self.args: list = new_args
 
-    def is_file_list_packages(self):
+    def is_file_list_packages(self) -> list:
         """ Checks if the arg is filelist.pkgs. """
         if self.args[1].endswith(self.file_list_suffix):
             file = Path(self.args[1])
diff --git a/slpkg/remove_packages.py b/slpkg/remove_packages.py
index a510fe29..1de2486c 100644
--- a/slpkg/remove_packages.py
+++ b/slpkg/remove_packages.py
@@ -84,7 +84,7 @@ class RemovePackages(Configs):
                 LogsDependencies.name == pkg).delete()
         self.session.commit()
 
-    def multi_process(self, command: str, package: str):
+    def multi_process(self, command: str, package: str) -> None:
         """ Starting multiprocessing remove process. """
         if self.silent_mode and not self.utils.is_option(self.flag_no_silent, self.flags):
 
diff --git a/slpkg/slackbuild.py b/slpkg/slackbuild.py
index 03bc39bd..9a54b121 100644
--- a/slpkg/slackbuild.py
+++ b/slpkg/slackbuild.py
@@ -133,7 +133,7 @@ class Slackbuilds(Configs):
 
         self.view_message.question()
 
-    def is_not_for_skipped(self, sbo) -> Literal[True]:
+    def is_not_for_skipped(self, sbo: str) -> Literal[True]:
         """ Condition to check if slackbuild is for skipped. """
         return (not self.utils.is_package_installed(sbo, self.file_pattern) or
                 self.utils.is_package_upgradeable(sbo, self.file_pattern) or
diff --git a/slpkg/tracking.py b/slpkg/tracking.py
index 58c952b7..c92ff7d4 100644
--- a/slpkg/tracking.py
+++ b/slpkg/tracking.py
@@ -44,7 +44,7 @@ class Tracking(Configs, Utilities):
             how_many: int = len(requires)
 
             if not requires:
-                requires = ['No dependencies']
+                requires: list = ['No dependencies']
 
             print(pkg)
             print(char, end='')
diff --git a/slpkg/update_repository.py b/slpkg/update_repository.py
index a9cdd733..63f5f024 100644
--- a/slpkg/update_repository.py
+++ b/slpkg/update_repository.py
@@ -81,7 +81,7 @@ class UpdateRepository(Configs):
         data = CreateData()
         data.install_sbo_table()
 
-    def check(self, q) -> None:
+    def check(self, queue) -> None:
         check_updates = CheckUpdates()
         is_update: int = 0
         if not check_updates.check():
@@ -91,7 +91,7 @@ class UpdateRepository(Configs):
             print(f'\n\n{self.bgreen}There are new updates available!{self.endc}')
             is_update: int = 1
 
-        return q.put(is_update)
+        return queue.put(is_update)
 
     def repository(self) -> None:
         """ Starting multiprocessing download process. """
diff --git a/slpkg/utilities.py b/slpkg/utilities.py
index b0c48dc1..ddf94371 100644
--- a/slpkg/utilities.py
+++ b/slpkg/utilities.py
@@ -169,7 +169,7 @@ class Utilities:
         with open(file, 'r', encoding='utf-8') as f:
             return f.readlines()
 
-    def process(self, command: str, stderr=None, stdout=None):
+    def process(self, command: str, stderr=None, stdout=None) -> None:
         """ Handle the processes. """
         try:
             output = subprocess.call(command, shell=True, stderr=stderr, stdout=stdout)
diff --git a/slpkg/views/cli_menu.py b/slpkg/views/cli_menu.py
index 94f9ce01..83332401 100644
--- a/slpkg/views/cli_menu.py
+++ b/slpkg/views/cli_menu.py
@@ -17,9 +17,9 @@ class Usage(Configs):
         self.yellow: str = color['yellow']
         self.endc: str = color['endc']
 
-    def help_minimal(self):
+    def help_minimal(self) -> NoReturn:
         """ Prints the minimal help menu. """
-        args = (
+        args: str = (
             f'\nUsage: {self.prog_name} [{self.yellow}OPTIONS{self.endc}] [{self.cyan}COMMAND{self.endc}] '
             f'[FILELIST|PACKAGES...]\n'
             f"\nTry '{self.prog_name} --help' for more options.\n")
diff --git a/slpkg/views/views.py b/slpkg/views/views.py
index 6fa0fbc8..f13998fe 100644
--- a/slpkg/views/views.py
+++ b/slpkg/views/views.py
@@ -40,7 +40,7 @@ class ViewMessage(Configs):
         self.file_pattern: str = f'*{self.repo_tag}'
         self.all_installed: list = list(self.utils.all_installed_names(self.file_pattern))
 
-    def view_packages(self, package, version, mode):
+    def view_packages(self, package: str, version: str, mode: str) -> None:
         """ Printing the main packages. """
         color: str = self.red