diff --git a/frontend.py b/frontend.py
index a800191..26a6477 100755
--- a/frontend.py
+++ b/frontend.py
@@ -144,7 +144,6 @@ def settings(user):
 
 
 @post('/settings/markdown')
-#csrf
 @view('template/settings.tpl')
 def update_markdown(user):
     user.set_markdown(request.forms['markdown'])
@@ -152,7 +151,6 @@ def update_markdown(user):
 
 
 @post('/settings/mail_md')
-#csrf
 @view('template/settings.tpl')
 def update_mail_md(user):
     user.set_mail_md(request.forms['mail_md'])
@@ -160,7 +158,6 @@ def update_mail_md(user):
 
 
 @post('/settings/goodlist')
-#csrf
 @view('template/settings.tpl')
 def update_trigger_patterns(user):
     user.set_trigger_words(request.forms['goodlist'])
@@ -168,7 +165,6 @@ def update_trigger_patterns(user):
 
 
 @post('/settings/blocklist')
-#csrf
 @view('template/settings.tpl')
 def update_badwords(user):
     user.set_badwords(request.forms['blocklist'])
@@ -176,7 +172,6 @@ def update_badwords(user):
 
 
 @post('/settings/telegram')
-#csrf
 def register_telegram(user):
     apikey = request.forms['apikey']
     user.update_telegram_key(apikey)
@@ -248,7 +243,6 @@ def twitter_callback(user):
 
 
 @post('/login/mastodon')
-#csrf
 def login_mastodon(user):
     """
     Mastodon OAuth authentication process.
diff --git a/template/settings.tpl b/template/settings.tpl
index 0971d1b..66cf873 100644
--- a/template/settings.tpl
+++ b/template/settings.tpl
@@ -61,6 +61,7 @@
                 <option value='octodon.social'>
                 <option value='soc.ialis.me'>
             </datalist>
+            <input name='csrf' value='{{csrf}}' type='hidden' />
             <input name='confirm' value='Log in' type='submit'/>
         </form>
 </section>
@@ -82,6 +83,7 @@
     </p>
     <form action="/settings/telegram" method="post">
         <input type="text" name="apikey" placeholder="Telegram bot API key" id="apikey">
+        <input name='csrf' value='{{csrf}}' type='hidden' />
         <input name='confirm' value='Login with Telegram' type='submit'/>
     </form>
 </div>
@@ -106,7 +108,7 @@
     </p>
     <form action="/settings/markdown" method="post">
         <textarea id="markdown" rows="20" cols="70" name="markdown" wrap="physical">{{markdown}}</textarea>
-        <input name='csrf' value='asdf' type='hidden' />
+        <input name='csrf' value='{{csrf}}' type='hidden' />
         <input name='confirm' value='Save' type='submit'/>
     </form>
 </div>
@@ -124,6 +126,7 @@
     </p>
     <form action="/settings/mail_md" method="post">
         <textarea id="mail_md" rows="20" cols="70" name="mail_md" wrap="physical">{{mail_md}}</textarea>
+        <input name='csrf' value='{{csrf}}' type='hidden' />
         <input name='confirm' value='Save' type='submit'/>
     </form>
 </div>
@@ -138,6 +141,7 @@
     </p>
     <form action="/settings/goodlist" method="post">
         <textarea id="goodlist" rows="8" cols="70" name="goodlist" wrap="physical">{{triggerwords}}</textarea>
+        <input name='csrf' value='{{csrf}}' type='hidden' />
         <input name='confirm' value='Submit' type='submit'/>
     </form>
 </div>
@@ -152,6 +156,7 @@
     </p>
     <form action="/settings/blocklist" method="post">
         <textarea id="blocklist" rows="8" cols="70" name="blocklist" wrap="physical">{{badwords}}</textarea>
+        <input name='csrf' value='{{csrf}}' type='hidden' />
         <input name='confirm' value='Submit' type='submit'/>
     </form>
 </div>