diff --git a/certificate/requirements.txt b/certificate/requirements.txt
index f6b57893..4b1f5db4 100644
--- a/certificate/requirements.txt
+++ b/certificate/requirements.txt
@@ -1,2 +1,2 @@
-Flask==1.1.1
+Flask==2.3.2
 Pillow==7.1.1
diff --git a/user/submit.php b/user/submit.php
index b307f714..64bf95b1 100644
--- a/user/submit.php
+++ b/user/submit.php
@@ -125,7 +125,7 @@
             </div>
             <div class="field flx col">
             </div>
-            <input type="hidden" id="task_day" name="task_day" value="Day <?= $days; ?>">
+            <input type="hidden" id="task_day" name="task_day" value="<?= $days; ?>">
             <input type="hidden" id="name" name="name" value="<?= $_SESSION['login_user']; ?>">
             <input type="hidden" name="cohort" value="<?=$cohort?>">
             <button style="display: none;" class="submit" id="upload" type="submit" name="psubmit">Submit task</button>