diff --git a/archivebox/config.py b/archivebox/config.py
index fd073566..ecdc46be 100644
--- a/archivebox/config.py
+++ b/archivebox/config.py
@@ -429,7 +429,7 @@ def get_versions_available_on_github(config):
     
     # we only want to perform the (relatively expensive) check for new versions
     # when its most relevant, e.g. when the user runs a long-running command
-    subcommand_run_by_user = sys.argv[3]
+    subcommand_run_by_user = sys.argv[3] if len(sys.argv) > 3 else 'help'
     long_running_commands = ('add', 'schedule', 'update', 'status', 'server')
     if subcommand_run_by_user not in long_running_commands:
         return None
@@ -446,7 +446,7 @@ def get_versions_available_on_github(config):
     # find current version or nearest older version (to link to)
     current_version = None
     for idx, release in enumerate(all_releases):
-        release_version = parse_version_string(release["tag_name"])
+        release_version = parse_version_string(release['tag_name'])
         if release_version <= installed_version:
             current_version = release
             break
@@ -460,7 +460,7 @@ def get_versions_available_on_github(config):
     except IndexError:
         recommended_version = None
 
-    return {"recommended_version": recommended_version, "current_version": current_version}
+    return {'recommended_version': recommended_version, 'current_version': current_version}
 
 def can_upgrade(config):
     if config['VERSIONS_AVAILABLE'] and config['VERSIONS_AVAILABLE']['recommended_version']:
@@ -783,7 +783,7 @@ def load_config(defaults: ConfigDefaultDict,
     return extended_config
 
 
-def parse_version_string(version: str) -> Tuple[int, int int]:
+def parse_version_string(version: str) -> Tuple[int, int, int]:
     """parses a version tag string formatted like 'vx.x.x' into (major, minor, patch) ints"""
     base = v.split('+')[0].split('v')[-1] # remove 'v' prefix and '+editable' suffix
     return tuple(int(part) for part in base.split('.'))[:3]
diff --git a/archivebox/templates/admin/base.html b/archivebox/templates/admin/base.html
index c905884c..a29df4f5 100644
--- a/archivebox/templates/admin/base.html
+++ b/archivebox/templates/admin/base.html
@@ -141,42 +141,43 @@
             {% block footer %}<div id="footer"></div>{% endblock %}
         </div>
 
-        <script>
-            {% if user.is_authenticated and user.is_superuser and CAN_UPGRADE %}
-            if (!localStorage.getItem("bannerDismissed")) {
-                const upgradeVersionTag = "{{VERSIONS_AVAILABLE.recommended_version.tag_name}}"
-                const upgradeVersionURL = "{{VERSIONS_AVAILABLE.recommended_version.html_url}}"
-                const currentVersionTag = "{{VERSION}}"
-                const currentVersionURL = "{{VERSIONS_AVAILABLE.recommended_version.html_url}}"
+        {% if user.is_authenticated and user.is_superuser and CAN_UPGRADE %}
+            <script>
+                if (!localStorage.getItem("bannerDismissed")) {
+                    const upgradeVersionTag = "{{VERSIONS_AVAILABLE.recommended_version.tag_name}}"
+                    const upgradeVersionURL = "{{VERSIONS_AVAILABLE.recommended_version.html_url}}"
+                    const currentVersionTag = "{{VERSION}}"
+                    const currentVersionURL = "{{VERSIONS_AVAILABLE.recommended_version.html_url}}"
 
-                createBanner(currentVersionTag, currentVersionURL, upgradeVersionTag, upgradeVersionURL)
-            }
-
-            function createBanner(currentVersionTag, currentVersionURL, upgradeVersionTag, upgradeVersionURL) {
-                const banner = document.createElement('div')
-                banner.setAttribute('id', 'upgrade-banner');
-                banner.innerHTML = `
-                    <p>There's a new version of ArchiveBox available!</p>
-                    Your version: <a href=${currentVersionURL}>${currentVersionTag}</a> | New version: <a href=${upgradeVersionURL}>${upgradeVersionTag}</a>
-                    <p>
-                    <a href=https://github.com/ArchiveBox/ArchiveBox/wiki/Upgrading-or-Merging-Archives>Upgrade Instructions</a> | <a href=https://github.com/ArchiveBox/ArchiveBox/releases>Changelog</a> | <a href=https://github.com/ArchiveBox/ArchiveBox/wiki/Roadmap>Roadmap</a> 
-                    </p>
-                    <button id="dismiss-btn">Dismiss</button>
-                `
-                document.body.appendChild(banner);
-                const dismissButton = document.querySelector("#dismiss-btn")
-                if (dismissButton) {
-                    dismissButton.addEventListener("click", dismissBanner)
+                    createBanner(currentVersionTag, currentVersionURL, upgradeVersionTag, upgradeVersionURL)
                 }
-            }
 
-            function dismissBanner() {
-                const banner = document.getElementById("upgrade-banner")
-                banner.style.display = "none"
-                localStorage.setItem("bannerDismissed", "true")
-            }
-            {% endif %}
+                function createBanner(currentVersionTag, currentVersionURL, upgradeVersionTag, upgradeVersionURL) {
+                    const banner = document.createElement('div')
+                    banner.setAttribute('id', 'upgrade-banner');
+                    banner.innerHTML = `
+                        <p>There's a new version of ArchiveBox available!</p>
+                        Your version: <a href=${currentVersionURL}>${currentVersionTag}</a> | New version: <a href=${upgradeVersionURL}>${upgradeVersionTag}</a>
+                        <p>
+                        <a href=https://github.com/ArchiveBox/ArchiveBox/wiki/Upgrading-or-Merging-Archives>Upgrade Instructions</a> | <a href=https://github.com/ArchiveBox/ArchiveBox/releases>Changelog</a> | <a href=https://github.com/ArchiveBox/ArchiveBox/wiki/Roadmap>Roadmap</a> 
+                        </p>
+                        <button id="dismiss-btn">Dismiss</button>
+                    `
+                    document.body.appendChild(banner);
+                    const dismissButton = document.querySelector("#dismiss-btn")
+                    if (dismissButton) {
+                        dismissButton.addEventListener("click", dismissBanner)
+                    }
+                }
 
+                function dismissBanner() {
+                    const banner = document.getElementById("upgrade-banner")
+                    banner.style.display = "none"
+                    localStorage.setItem("bannerDismissed", "true")
+                }
+            </script>
+        {% endif %}
+        <script>
             $ = django.jQuery;
             $.fn.reverse = [].reverse;