diff --git a/index.html b/index.html
index dc14e5c..c4533a5 100644
--- a/index.html
+++ b/index.html
@@ -370,7 +370,7 @@ <h1>Contact Us</h1>
                 <input type="hidden" name="access_key" value="47c3ce45-249f-4c39-97e7-80972e46017d">
                 <input type="text" id="name" name="name" placeholder="Name" required>
                 <input type="email" id="email" name="email" placeholder="Email" required>
-                <input type="text" id="phone" name="phone" placeholder="Phone No" required>
+                <input type="text" id="phone" name="phone" placeholder="Phone No" pattern="\d{10}" maxlength="10" required>
                 <textarea id="message" name="message" rows="4" placeholder="Write your message" required></textarea>
                 <button type="submit">Submit</button>
               </form>