diff --git a/doc/contributing.asciidoc b/doc/contributing.asciidoc
index dc52dd9a0..a9e266a1d 100644
--- a/doc/contributing.asciidoc
+++ b/doc/contributing.asciidoc
@@ -710,6 +710,7 @@ qutebrowser release
 
 * Update changelog (remove *(unreleased)*).
 * Adjust `__version_info__` in `qutebrowser/__init__.py`.
+* Consider updating the completions for `content.headers.user_agent` in `configdata.yml`.
 * Commit.
 
 * Create annotated git tag (`git tag -s "v1.$x.$y" -m "Release v1.$x.$y"`).
diff --git a/qutebrowser/config/configdata.yml b/qutebrowser/config/configdata.yml
index 514d30263..b8f5235f4 100644
--- a/qutebrowser/config/configdata.yml
+++ b/qutebrowser/config/configdata.yml
@@ -478,46 +478,14 @@ content.headers.user_agent:
       # 'ua_fetch.py'
       # Vim-protip: Place your cursor below this comment and run
       # :r!python scripts/dev/ua_fetch.py
-      - - "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:53.0) Gecko/20100101
-          Firefox/53.0"
-        - Firefox 53.0 Win8.1
-      - - "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:53.0) Gecko/20100101
-          Firefox/53.0"
-        - Firefox 53.0 Linux
-      - - "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:53.0)
-          Gecko/20100101 Firefox/53.0"
-        - Firefox 53.0 MacOSX
-
-      - - "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_5) AppleWebKit/603.2.4
-          (KHTML, like Gecko) Version/10.1.1 Safari/603.2.4"
-        - Safari Generic MacOSX
-      - - "Mozilla/5.0 (iPad; CPU OS 10_3_1 like Mac OS X) AppleWebKit/603.1.30
-          (KHTML, like Gecko) Version/10.0 Mobile/14E304 Safari/602.1"
-        - Mobile Safari 10.0 iOS
-
       - - "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML,
-          like Gecko) Chrome/58.0.3029.110 Safari/537.36"
-        - Chrome Generic Win10
-      - - "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_5) AppleWebKit/537.36
-          (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36"
-        - Chrome Generic MacOSX
+          like Gecko) Chrome/71.0.3578.98 Safari/537.36"
+        - Chrome 71.0 Win10
       - - "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like
-          Gecko) Chrome/58.0.3029.110 Safari/537.36"
-        - Chrome Generic Linux
-
-      - - "Mozilla/5.0 (compatible; Googlebot/2.1;
-          +http://www.google.com/bot.html"
-        - Google Bot
-      - - "Wget/1.16.1 (linux-gnu)"
-        - wget 1.16.1
-      - - "curl/7.40.0"
-        - curl 7.40.0
-      - - "Mozilla/5.0 (Linux; U; Android 7.1.2) AppleWebKit/534.30 (KHTML,
-          like Gecko) Version/4.0 Mobile Safari/534.30"
-        - Mobile Generic Android
-      - - "Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like
-          Gecko"
-        - IE 11.0 for Desktop Win7 64-bit
+          Gecko) Chrome/71.0.3578.98 Safari/537.36"
+        - Chrome 71.0 Linux
+      - - ""
+        - Use default QtWebKit/QtWebEngine User-Agent
 
   supports_pattern: true
   desc: >-
diff --git a/scripts/dev/ua_fetch.py b/scripts/dev/ua_fetch.py
index 75ce4c2f7..6547ad5de 100755
--- a/scripts/dev/ua_fetch.py
+++ b/scripts/dev/ua_fetch.py
@@ -75,42 +75,17 @@ def filter_list(complete_list, browsers):
     return table
 
 
-def add_diversity(table):
-    """Insert a few additional entries for diversity into the dict.
-
-    (as returned by filter_list())
-    """
-    table["Obscure"] = [
-        ('Mozilla/5.0 (compatible; Googlebot/2.1; '
-         '+http://www.google.com/bot.html',
-         "Google Bot"),
-        ('Wget/1.16.1 (linux-gnu)',
-         "wget 1.16.1"),
-        ('curl/7.40.0',
-         "curl 7.40.0"),
-        ('Mozilla/5.0 (Linux; U; Android 7.1.2) AppleWebKit/534.30 '
-         '(KHTML, like Gecko) Version/4.0 Mobile Safari/534.30',
-         "Mobile Generic Android"),
-        ('Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like '
-         'Gecko',
-         "IE 11.0 for Desktop  Win7 64-bit"),
-    ]
-    return table
-
-
 def main():
     """Generate user agent code."""
     fetched = fetch()
     lut = {
-        "Firefox": {"Win", "MacOSX", "Linux", "Android"},
-        "Chrome": {"Win", "MacOSX", "Linux"},
-        "Safari": {"MacOSX", "iOS"}
+        "Chrome": {"Win10", "Linux"},
     }
     filtered = filter_list(fetched, lut)
-    filtered = add_diversity(filtered)
+    filtered["empty"] = [('', "Use default QtWebKit/QtWebEngine User-Agent")]
 
     tab = "  "
-    for browser in ["Firefox", "Safari", "Chrome", "Obscure"]:
+    for browser in ["Chrome", "empty"]:
         for it in filtered[browser]:
             print('{}- - "{}"'.format(3 * tab, it[0]))
             desc = it[1].replace('\xa0', ' ').replace('  ', ' ')