diff --git a/dangerzone/gui/updater.py b/dangerzone/gui/updater.py
new file mode 100644
index 000000000..0254bca80
--- /dev/null
+++ b/dangerzone/gui/updater.py
@@ -0,0 +1,263 @@
+"""A module that contains the logic for checking for updates."""
+
+import logging
+import platform
+import sys
+import time
+import typing
+from typing import Any, Optional
+
+from packaging import version
+
+if typing.TYPE_CHECKING:
+    from PySide2 import QtCore
+else:
+    try:
+        from PySide6 import QtCore
+    except ImportError:
+        from PySide2 import QtCore
+
+import markdown
+import requests
+
+from ..util import get_version
+from .logic import Alert, DangerzoneGui
+
+log = logging.getLogger(__name__)
+
+
+# TODO: Create a wiki page that explains how updates work for Dangerzone, before
+# merging this.
+MSG_CONFIRM_UPDATE_CHECKS = """\
+<p>Do you want to be notified about new Dangerzone releases?</p>
+
+<p>If <i>"Yes"</i>, Dangerzone will check GitHub for new releases on startup. If
+<i>"No"</i>, Dangerzone will make no network requests and won't inform you about new
+releases.</p>
+
+<p>If you prefer another way of getting notified about new releases, we suggest adding
+to your RSS reader our
+<a href="https://fosstodon.org/@dangerzone.rss">Mastodon feed</a>. For more information
+about updates, check our
+<a href="https://github.com/freedomofpress/dangerzone/wiki/Updates">wiki page</a>.</p>
+"""
+
+UPDATE_CHECK_COOLDOWN_SECS = 60 * 60 * 12  # Check for updates at most every 12 hours.
+
+
+class UpdateReport:
+    """A report for an update check."""
+
+    def __init__(
+        self,
+        version: Optional[str] = None,
+        changelog: Optional[str] = None,
+        error: Optional[str] = None,
+    ):
+        self.version = version
+        self.changelog = changelog
+        self.error = error
+
+    def empty(self) -> bool:
+        return self.version is None and self.changelog is None and self.error is None
+
+
+class UpdaterThread(QtCore.QThread):
+    """Check asynchronously for Dangerzone updates.
+
+    The Updater class is mainly responsible for the following:
+
+    1. Asking the user if they want to enable update checks or not.
+    2. Determining when it's the right time to check for updates.
+    3. Hitting the GitHub releases API and learning about updates.
+
+    Since checking for updates is a task that may take some time, we perform it
+    asynchronously, in a Qt thread. This thread then triggers a signal, and informs
+    whoever has connected to it.
+    """
+
+    finished = QtCore.Signal(dict)
+
+    GH_RELEASE_URL = (
+        "https://api.github.com/repos/freedomofpress/dangerzone/releases/latest"
+    )
+
+    def __init__(self, dangerzone: DangerzoneGui):
+        super().__init__()
+        self.dangerzone = dangerzone
+
+    ###########
+    # Helpers for updater settings
+    #
+    # These helpers make it easy to retrieve specific updater-related settings, as well
+    # as save the settings file, only when necessary.
+
+    @property
+    def check(self) -> Optional[bool]:
+        return self.dangerzone.settings.get("updater_check")
+
+    @check.setter
+    def check(self, val: bool) -> None:
+        self.dangerzone.settings.set("updater_check", val, autosave=True)
+
+    def prompt_for_checks(self) -> bool:
+        """Ask the user if they want to be informed about Dangerzone updates."""
+        log.debug("Prompting the user for update checks")
+        # FIXME: Handle the case where a user clicks on "X", instead of explicitly
+        # making a choice. We should probably ask them again on the next run.
+        check = Alert(
+            self.dangerzone,
+            message=MSG_CONFIRM_UPDATE_CHECKS,
+            ok_text="Yes",
+            cancel_text="No",
+        ).launch()
+        return bool(check)
+
+    def should_check_for_updates(self) -> bool:
+        """Determine if we can check for updates based on settings and user prefs.
+
+        Note that this method only checks if the user has expressed an interest for
+        learning about new updates, and not whether we should actually make an update
+        check. Those two things are distinct, actually. For example:
+
+        * A user may have expressed that they want to learn about new updates.
+        * A previous update check may have found out that there's a new version out.
+        * Thus we will always show to the user the cached info about the new version,
+          and won't make a new update check.
+        """
+        log.debug("Checking platform type")
+        # TODO: Disable updates for Homebrew installations.
+        if platform.system() == "Linux" and not getattr(sys, "dangerzone_dev", False):
+            log.debug("Running on Linux, disabling updates")
+            self.check = False
+            return False
+
+        log.debug("Checking if first run of Dangerzone")
+        if self.dangerzone.settings.get("updater_last_check") is None:
+            log.debug("Dangerzone is running for the first time, updates are stalled")
+            self.dangerzone.settings.set("updater_last_check", 0, autosave=True)
+            return False
+
+        log.debug("Checking if user has already expressed their preference")
+        if self.check is None:
+            log.debug("User has not been asked yet for update checks")
+            self.check = self.prompt_for_checks()
+            return self.check
+        elif not self.check:
+            log.debug("User has expressed that they don't want to check for updates")
+            return False
+
+        return True
+
+    def can_update(self, cur_version: str, latest_version: str) -> bool:
+        if version.parse(cur_version) == version.parse(latest_version):
+            return False
+        elif version.parse(cur_version) > version.parse(latest_version):
+            # FIXME: This is a sanity check, but we should improve its wording.
+            raise Exception("Received version is older than the latest version")
+        else:
+            return True
+
+    def _get_now_timestamp(self) -> int:
+        return int(time.time())
+
+    def _should_postpone_update_check(self) -> bool:
+        """Consult and update cooldown timer.
+
+        If the previous check happened before the cooldown period expires, do not check
+        again.
+        """
+        current_time = self._get_now_timestamp()
+        last_check = self.dangerzone.settings.get("updater_last_check")
+        if current_time < last_check + UPDATE_CHECK_COOLDOWN_SECS:
+            log.debug(f"Cooling down update checks")
+            return True
+        else:
+            return False
+
+    def get_latest_info(self) -> UpdateReport:
+        """Get the latest release info from GitHub.
+
+        Also, render the changelog from Markdown format to HTML, so that we can show it
+        to the users.
+        """
+        try:
+            # TODO: Set timeout.
+            info = requests.get(self.GH_RELEASE_URL).json()
+        except Exception as e:
+            # TODO:: Handle errors.
+            raise
+
+        version = info["tag_name"].lstrip("v")
+        changelog = markdown.markdown(info["body"])
+
+        return UpdateReport(version=version, changelog=changelog)
+
+    # XXX: This happens in parallel with other tasks. DO NOT alter global state!
+    def _check_for_updates(self) -> UpdateReport:
+        """Check for updates locally and remotely.
+
+        Check for updates in two places:
+
+        1. In our settings, in case we have cached the latest version/changelog from a
+           previous run.
+        2. In GitHub, by hitting the latest releases API.
+        """
+        log.debug(f"Checking for Dangerzone updates")
+        latest_version = self.dangerzone.settings.get("updater_latest_version")
+        if version.parse(get_version()) < version.parse(latest_version):
+            log.debug(f"Determined that there is an update due to cached results")
+            return UpdateReport(
+                version=latest_version,
+                changelog=self.dangerzone.settings.get("updater_latest_changelog"),
+            )
+
+        # If the previous check happened before the cooldown period expires, do not
+        # check again. Else, bump the last check timestamp, before making the actual
+        # check. This is to ensure that even failed update checks respect the cooldown
+        # period.
+        if self._should_postpone_update_check():
+            return UpdateReport()
+        else:
+            self.dangerzone.settings.set(
+                "updater_last_check", self._get_now_timestamp(), autosave=True
+            )
+
+        log.debug(f"Checking the latest GitHub release")
+        report = self.get_latest_info()
+        log.debug(f"Latest version in GitHub is {report.version}")
+        if report.version and self.can_update(latest_version, report.version):
+            log.debug(
+                f"Determined that there is an update due to a new GitHub version:"
+                f" {latest_version} < {report.version}"
+            )
+            return report
+
+        log.debug(f"No need to update")
+        return UpdateReport()
+
+    ##################
+    # Logic for running update checks asynchronously
+
+    def check_for_updates(self) -> UpdateReport:
+        """Check for updates and return a report with the findings:
+
+        There are three scenarios when we check for updates, and each scenario returns a
+        slightly different answer:
+
+        1. No new updates: Return an empty update report.
+        2. Updates are available: Return an update report with the latest version and
+           changelog, in HTML format.
+        3. Update check failed: Return an update report that holds just the error
+           message.
+        """
+        try:
+            res = self._check_for_updates()
+        except Exception as e:
+            log.exception("Encountered an error while checking for upgrades")
+            res = UpdateReport(error=str(e))
+
+        return res
+
+    def run(self) -> None:
+        self.finished.emit(self.check_for_updates())
diff --git a/install/linux/build-rpm.py b/install/linux/build-rpm.py
index a7f423b31..a84f891af 100755
--- a/install/linux/build-rpm.py
+++ b/install/linux/build-rpm.py
@@ -54,7 +54,7 @@ def main():
 
     print("* Building RPM package")
     subprocess.run(
-        f"python3 setup.py bdist_rpm --requires='{platform_dependant_packages},python3-pyside2,python3-appdirs,python3-click,python3-pyxdg,python3-colorama'",
+        f"python3 setup.py bdist_rpm --requires='{platform_dependant_packages},python3-pyside2,python3-appdirs,python3-click,python3-pyxdg,python3-colorama,python3-requests,python3-markdown,python3-packaging'",
         shell=True,
         cwd=root,
         check=True,
diff --git a/poetry.lock b/poetry.lock
index e7cec2427..480893e0c 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,10 +1,9 @@
-# This file is automatically @generated by Poetry 1.4.1 and should not be changed by hand.
+# This file is automatically @generated by Poetry 1.5.1 and should not be changed by hand.
 
 [[package]]
 name = "altgraph"
 version = "0.17.3"
 description = "Python graph (network) package"
-category = "dev"
 optional = false
 python-versions = "*"
 files = [
@@ -16,7 +15,6 @@ files = [
 name = "appdirs"
 version = "1.4.4"
 description = "A small Python module for determining appropriate platform-specific dirs, e.g. a \"user data dir\"."
-category = "main"
 optional = false
 python-versions = "*"
 files = [
@@ -28,7 +26,6 @@ files = [
 name = "attrs"
 version = "22.2.0"
 description = "Classes Without Boilerplate"
-category = "dev"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -47,7 +44,6 @@ tests-no-zope = ["cloudpickle", "cloudpickle", "hypothesis", "hypothesis", "mypy
 name = "black"
 version = "23.1.0"
 description = "The uncompromising code formatter."
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -94,11 +90,105 @@ d = ["aiohttp (>=3.7.4)"]
 jupyter = ["ipython (>=7.8.0)", "tokenize-rt (>=3.2.0)"]
 uvloop = ["uvloop (>=0.15.2)"]
 
+[[package]]
+name = "certifi"
+version = "2023.5.7"
+description = "Python package for providing Mozilla's CA Bundle."
+optional = false
+python-versions = ">=3.6"
+files = [
+    {file = "certifi-2023.5.7-py3-none-any.whl", hash = "sha256:c6c2e98f5c7869efca1f8916fed228dd91539f9f1b444c314c06eef02980c716"},
+    {file = "certifi-2023.5.7.tar.gz", hash = "sha256:0f0d56dc5a6ad56fd4ba36484d6cc34451e1c6548c61daad8c320169f91eddc7"},
+]
+
+[[package]]
+name = "charset-normalizer"
+version = "3.1.0"
+description = "The Real First Universal Charset Detector. Open, modern and actively maintained alternative to Chardet."
+optional = false
+python-versions = ">=3.7.0"
+files = [
+    {file = "charset-normalizer-3.1.0.tar.gz", hash = "sha256:34e0a2f9c370eb95597aae63bf85eb5e96826d81e3dcf88b8886012906f509b5"},
+    {file = "charset_normalizer-3.1.0-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:e0ac8959c929593fee38da1c2b64ee9778733cdf03c482c9ff1d508b6b593b2b"},
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+    {file = "charset_normalizer-3.1.0-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:04eefcee095f58eaabe6dc3cc2262f3bcd776d2c67005880894f447b3f2cb9c1"},
+    {file = "charset_normalizer-3.1.0-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:20064ead0717cf9a73a6d1e779b23d149b53daf971169289ed2ed43a71e8d3b0"},
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+    {file = "charset_normalizer-3.1.0-cp39-cp39-win_amd64.whl", hash = "sha256:830d2948a5ec37c386d3170c483063798d7879037492540f10a475e3fd6f244b"},
+    {file = "charset_normalizer-3.1.0-py3-none-any.whl", hash = "sha256:3d9098b479e78c85080c98e1e35ff40b4a31d8953102bb0fd7d1b6f8a2111a3d"},
+]
+
 [[package]]
 name = "click"
 version = "8.1.3"
 description = "Composable command line interface toolkit"
-category = "main"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -114,7 +204,6 @@ importlib-metadata = {version = "*", markers = "python_version < \"3.8\""}
 name = "colorama"
 version = "0.4.6"
 description = "Cross-platform colored terminal text."
-category = "main"
 optional = false
 python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,!=3.5.*,!=3.6.*,>=2.7"
 files = [
@@ -126,7 +215,6 @@ files = [
 name = "coverage"
 version = "7.2.2"
 description = "Code coverage measurement for Python"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -193,7 +281,6 @@ toml = ["tomli"]
 name = "cx-freeze"
 version = "6.13.2"
 description = "Create standalone executables from Python scripts"
-category = "dev"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -250,7 +337,6 @@ test = ["nose (==1.3.7)", "pygments (>=2.11.2)", "pytest (>=7.0.1)", "pytest-cov
 name = "cx-logging"
 version = "3.1.0"
 description = "Python and C interfaces for logging"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -281,7 +367,6 @@ files = [
 name = "exceptiongroup"
 version = "1.1.1"
 description = "Backport of PEP 654 (exception groups)"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -296,7 +381,6 @@ test = ["pytest (>=6)"]
 name = "execnet"
 version = "1.9.0"
 description = "execnet: rapid multi-Python deployment"
-category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 files = [
@@ -307,11 +391,21 @@ files = [
 [package.extras]
 testing = ["pre-commit"]
 
+[[package]]
+name = "idna"
+version = "3.4"
+description = "Internationalized Domain Names in Applications (IDNA)"
+optional = false
+python-versions = ">=3.5"
+files = [
+    {file = "idna-3.4-py3-none-any.whl", hash = "sha256:90b77e79eaa3eba6de819a0c442c0b4ceefc341a7a2ab77d7562bf49f425c5c2"},
+    {file = "idna-3.4.tar.gz", hash = "sha256:814f528e8dead7d329833b91c5faa87d60bf71824cd12a7530b5526063d02cb4"},
+]
+
 [[package]]
 name = "importlib-metadata"
 version = "6.1.0"
 description = "Read metadata from Python packages"
-category = "main"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -332,7 +426,6 @@ testing = ["flake8 (<5)", "flufl.flake8", "importlib-resources (>=1.3)", "packag
 name = "iniconfig"
 version = "2.0.0"
 description = "brain-dead simple config-ini parsing"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -344,7 +437,6 @@ files = [
 name = "isort"
 version = "5.11.5"
 description = "A Python utility / library to sort Python imports."
-category = "dev"
 optional = false
 python-versions = ">=3.7.0"
 files = [
@@ -362,7 +454,6 @@ requirements-deprecated-finder = ["pip-api", "pipreqs"]
 name = "lief"
 version = "0.12.3"
 description = "Library to instrument executable formats"
-category = "dev"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -406,7 +497,6 @@ files = [
 name = "macholib"
 version = "1.16.2"
 description = "Mach-O header analysis and editing"
-category = "dev"
 optional = false
 python-versions = "*"
 files = [
@@ -417,11 +507,27 @@ files = [
 [package.dependencies]
 altgraph = ">=0.17"
 
+[[package]]
+name = "markdown"
+version = "3.4.3"
+description = "Python implementation of John Gruber's Markdown."
+optional = false
+python-versions = ">=3.7"
+files = [
+    {file = "Markdown-3.4.3-py3-none-any.whl", hash = "sha256:065fd4df22da73a625f14890dd77eb8040edcbd68794bcd35943be14490608b2"},
+    {file = "Markdown-3.4.3.tar.gz", hash = "sha256:8bf101198e004dc93e84a12a7395e31aac6a9c9942848ae1d99b9d72cf9b3520"},
+]
+
+[package.dependencies]
+importlib-metadata = {version = ">=4.4", markers = "python_version < \"3.10\""}
+
+[package.extras]
+testing = ["coverage", "pyyaml"]
+
 [[package]]
 name = "mypy"
 version = "1.1.1"
 description = "Optional static typing for Python"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -469,7 +575,6 @@ reports = ["lxml"]
 name = "mypy-extensions"
 version = "1.0.0"
 description = "Type system extensions for programs checked with the mypy type checker."
-category = "dev"
 optional = false
 python-versions = ">=3.5"
 files = [
@@ -481,7 +586,6 @@ files = [
 name = "packaging"
 version = "23.0"
 description = "Core utilities for Python packages"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -493,7 +597,6 @@ files = [
 name = "pathspec"
 version = "0.11.1"
 description = "Utility library for gitignore style pattern matching of file paths."
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -505,7 +608,6 @@ files = [
 name = "platformdirs"
 version = "3.2.0"
 description = "A small Python package for determining appropriate platform-specific dirs, e.g. a \"user data dir\"."
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -524,7 +626,6 @@ test = ["appdirs (==1.4.4)", "covdefaults (>=2.3)", "pytest (>=7.2.2)", "pytest-
 name = "pluggy"
 version = "1.0.0"
 description = "plugin and hook calling mechanisms for python"
-category = "dev"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -543,7 +644,6 @@ testing = ["pytest", "pytest-benchmark"]
 name = "py"
 version = "1.11.0"
 description = "library with cross-python path, ini-parsing, io, code, log facilities"
-category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 files = [
@@ -555,7 +655,6 @@ files = [
 name = "pyinstaller"
 version = "5.9.0"
 description = "PyInstaller bundles a Python application and all its dependencies into a single package."
-category = "dev"
 optional = false
 python-versions = "<3.12,>=3.7"
 files = [
@@ -588,7 +687,6 @@ hook-testing = ["execnet (>=1.5.0)", "psutil", "pytest (>=2.7.3)"]
 name = "pyinstaller-hooks-contrib"
 version = "2023.1"
 description = "Community maintained hooks for PyInstaller"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -600,7 +698,6 @@ files = [
 name = "pyside6"
 version = "6.4.3"
 description = "Python bindings for the Qt cross-platform application and UI framework"
-category = "main"
 optional = false
 python-versions = "<3.12,>=3.7"
 files = [
@@ -621,7 +718,6 @@ shiboken6 = "6.4.3"
 name = "pyside6-addons"
 version = "6.4.3"
 description = "Python bindings for the Qt cross-platform application and UI framework (Addons)"
-category = "main"
 optional = false
 python-versions = "<3.12,>=3.7"
 files = [
@@ -641,7 +737,6 @@ shiboken6 = "6.4.3"
 name = "pyside6-essentials"
 version = "6.4.3"
 description = "Python bindings for the Qt cross-platform application and UI framework (Essentials)"
-category = "main"
 optional = false
 python-versions = "<3.12,>=3.7"
 files = [
@@ -660,7 +755,6 @@ shiboken6 = "6.4.3"
 name = "pytest"
 version = "7.2.2"
 description = "pytest: simple powerful testing with Python"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -685,7 +779,6 @@ testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "pygments (>=2.
 name = "pytest-cov"
 version = "3.0.0"
 description = "Pytest plugin for measuring coverage."
-category = "dev"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -704,7 +797,6 @@ testing = ["fields", "hunter", "process-tests", "pytest-xdist", "six", "virtuale
 name = "pytest-forked"
 version = "1.6.0"
 description = "run tests in isolated forked subprocesses"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -720,7 +812,6 @@ pytest = ">=3.10"
 name = "pytest-mock"
 version = "3.10.0"
 description = "Thin-wrapper around the mock package for easier use with pytest"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -738,7 +829,6 @@ dev = ["pre-commit", "pytest-asyncio", "tox"]
 name = "pytest-xdist"
 version = "2.5.0"
 description = "pytest xdist plugin for distributed testing and loop-on-failing modes"
-category = "dev"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -760,7 +850,6 @@ testing = ["filelock"]
 name = "pywin32"
 version = "306"
 description = "Python for Window Extensions"
-category = "dev"
 optional = false
 python-versions = "*"
 files = [
@@ -784,7 +873,6 @@ files = [
 name = "pyxdg"
 version = "0.28"
 description = "PyXDG contains implementations of freedesktop.org standards in python."
-category = "main"
 optional = false
 python-versions = "*"
 files = [
@@ -792,11 +880,31 @@ files = [
     {file = "pyxdg-0.28.tar.gz", hash = "sha256:3267bb3074e934df202af2ee0868575484108581e6f3cb006af1da35395e88b4"},
 ]
 
+[[package]]
+name = "requests"
+version = "2.31.0"
+description = "Python HTTP for Humans."
+optional = false
+python-versions = ">=3.7"
+files = [
+    {file = "requests-2.31.0-py3-none-any.whl", hash = "sha256:58cd2187c01e70e6e26505bca751777aa9f2ee0b7f4300988b709f44e013003f"},
+    {file = "requests-2.31.0.tar.gz", hash = "sha256:942c5a758f98d790eaed1a29cb6eefc7ffb0d1cf7af05c3d2791656dbd6ad1e1"},
+]
+
+[package.dependencies]
+certifi = ">=2017.4.17"
+charset-normalizer = ">=2,<4"
+idna = ">=2.5,<4"
+urllib3 = ">=1.21.1,<3"
+
+[package.extras]
+socks = ["PySocks (>=1.5.6,!=1.5.7)"]
+use-chardet-on-py3 = ["chardet (>=3.0.2,<6)"]
+
 [[package]]
 name = "setuptools"
 version = "65.7.0"
 description = "Easily download, build, install, upgrade, and uninstall Python packages"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -813,7 +921,6 @@ testing-integration = ["build[virtualenv]", "filelock (>=3.4.0)", "jaraco.envs (
 name = "shiboken6"
 version = "6.4.3"
 description = "Python/C++ bindings helper module"
-category = "main"
 optional = false
 python-versions = "<3.12,>=3.7"
 files = [
@@ -829,7 +936,6 @@ files = [
 name = "strip-ansi"
 version = "0.1.1"
 description = "Strip ANSI escape sequences from a string"
-category = "dev"
 optional = false
 python-versions = ">=3.6,<4.0"
 files = [
@@ -841,7 +947,6 @@ files = [
 name = "tomli"
 version = "2.0.1"
 description = "A lil' TOML parser"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -853,7 +958,6 @@ files = [
 name = "typed-ast"
 version = "1.5.4"
 description = "a fork of Python 2 and 3 ast modules with type comment support"
-category = "dev"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -883,22 +987,56 @@ files = [
     {file = "typed_ast-1.5.4.tar.gz", hash = "sha256:39e21ceb7388e4bb37f4c679d72707ed46c2fbf2a5609b8b8ebc4b067d977df2"},
 ]
 
+[[package]]
+name = "types-markdown"
+version = "3.4.2.9"
+description = "Typing stubs for Markdown"
+optional = false
+python-versions = "*"
+files = [
+    {file = "types-Markdown-3.4.2.9.tar.gz", hash = "sha256:0930057bea0a534e06bbc021d57520720ad2a65b363612614ab0599cc7f606a9"},
+    {file = "types_Markdown-3.4.2.9-py3-none-any.whl", hash = "sha256:c23a8a4dd9313539a446ba3dc673a6a920d79580c406de10a5c85a16733890a7"},
+]
+
 [[package]]
 name = "types-pyside2"
 version = "5.15.2.1.3"
 description = "The most accurate stubs for PySide2"
-category = "dev"
 optional = false
 python-versions = "*"
 files = [
     {file = "types_PySide2-5.15.2.1.3-py2.py3-none-any.whl", hash = "sha256:a1f3e64d248037f426d3542c1cb693fe64fa783f552efba52347cd1a328fe552"},
 ]
 
+[[package]]
+name = "types-requests"
+version = "2.31.0.1"
+description = "Typing stubs for requests"
+optional = false
+python-versions = "*"
+files = [
+    {file = "types-requests-2.31.0.1.tar.gz", hash = "sha256:3de667cffa123ce698591de0ad7db034a5317457a596eb0b4944e5a9d9e8d1ac"},
+    {file = "types_requests-2.31.0.1-py3-none-any.whl", hash = "sha256:afb06ef8f25ba83d59a1d424bd7a5a939082f94b94e90ab5e6116bd2559deaa3"},
+]
+
+[package.dependencies]
+types-urllib3 = "*"
+
+[[package]]
+name = "types-urllib3"
+version = "1.26.25.13"
+description = "Typing stubs for urllib3"
+optional = false
+python-versions = "*"
+files = [
+    {file = "types-urllib3-1.26.25.13.tar.gz", hash = "sha256:3300538c9dc11dad32eae4827ac313f5d986b8b21494801f1bf97a1ac6c03ae5"},
+    {file = "types_urllib3-1.26.25.13-py3-none-any.whl", hash = "sha256:5dbd1d2bef14efee43f5318b5d36d805a489f6600252bb53626d4bfafd95e27c"},
+]
+
 [[package]]
 name = "typing-extensions"
 version = "4.5.0"
 description = "Backported and Experimental Type Hints for Python 3.7+"
-category = "main"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -906,11 +1044,27 @@ files = [
     {file = "typing_extensions-4.5.0.tar.gz", hash = "sha256:5cb5f4a79139d699607b3ef622a1dedafa84e115ab0024e0d9c044a9479ca7cb"},
 ]
 
+[[package]]
+name = "urllib3"
+version = "2.0.3"
+description = "HTTP library with thread-safe connection pooling, file post, and more."
+optional = false
+python-versions = ">=3.7"
+files = [
+    {file = "urllib3-2.0.3-py3-none-any.whl", hash = "sha256:48e7fafa40319d358848e1bc6809b208340fafe2096f1725d05d67443d0483d1"},
+    {file = "urllib3-2.0.3.tar.gz", hash = "sha256:bee28b5e56addb8226c96f7f13ac28cb4c301dd5ea8a6ca179c0b9835e032825"},
+]
+
+[package.extras]
+brotli = ["brotli (>=1.0.9)", "brotlicffi (>=0.8.0)"]
+secure = ["certifi", "cryptography (>=1.9)", "idna (>=2.0.0)", "pyopenssl (>=17.1.0)", "urllib3-secure-extra"]
+socks = ["pysocks (>=1.5.6,!=1.5.7,<2.0)"]
+zstd = ["zstandard (>=0.18.0)"]
+
 [[package]]
 name = "zipp"
 version = "3.15.0"
 description = "Backport of pathlib-compatible object wrapper for zip files"
-category = "main"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -925,4 +1079,3 @@ testing = ["big-O", "flake8 (<5)", "jaraco.functools", "jaraco.itertools", "more
 [metadata]
 lock-version = "2.0"
 python-versions = ">=3.7,<3.12"
-content-hash = "6f9d5cf06f7f00efbf05fe3531356e29796538a990ed43f2638541dd66003428"
diff --git a/pyproject.toml b/pyproject.toml
index 431c07073..da51b323f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -12,6 +12,9 @@ appdirs = "*"
 PySide6 = "^6.4.1"
 colorama = "*"
 pyxdg = {version = "*", platform = "linux"}
+requests = "*"
+markdown = "*"
+packaging = "*"
 
 [tool.poetry.scripts]
 dangerzone = 'dangerzone:main'
@@ -31,6 +34,8 @@ black = "*"
 isort = "*"
 mypy = "*"
 types-PySide2 = "*"
+types-Markdown = "*"
+types-requests = "*"
 
 # Dependencies required for testing the code.
 [tool.poetry.group.test.dependencies]
diff --git a/stdeb.cfg b/stdeb.cfg
index 8c41c2c72..04e815d67 100644
--- a/stdeb.cfg
+++ b/stdeb.cfg
@@ -1,6 +1,6 @@
 [DEFAULT]
 Package3: dangerzone
-Depends3: podman, python3, python3-pyside2.qtcore, python3-pyside2.qtgui, python3-pyside2.qtwidgets, python3-appdirs, python3-click, python3-xdg, python3-colorama
+Depends3: podman, python3, python3-pyside2.qtcore, python3-pyside2.qtgui, python3-pyside2.qtwidgets, python3-appdirs, python3-click, python3-xdg, python3-colorama, python3-requests, python3-markdown, python3-packaging
 Build-Depends: dh-python, python3, python3-setuptools, python3-stdeb
 Suite: bionic
 X-Python3-Version: >= 3.6