diff --git a/js/form-validation.js b/js/form-validation.js
index f168040..3c1893e 100644
--- a/js/form-validation.js
+++ b/js/form-validation.js
@@ -4,6 +4,7 @@ class FormValidator {
     this.passwordRequirements = {
       length: { regex: /.{8,}/, message: "At least 8 characters" },
       uppercase: { regex: /[A-Z]/, message: "One uppercase letter" },
+      lowercase: {regex: /[a-z]/, message: "One lowercase letter"},
       number: { regex: /[0-9]/, message: "One number" },
       special: { regex: /[^A-Za-z0-9]/, message: "One special character" },
     };
diff --git a/signup.html b/signup.html
index 808398b..b2bea66 100644
--- a/signup.html
+++ b/signup.html
@@ -125,6 +125,7 @@ <h1>Research Paper Organizer</h1>
                 <ul>
                   <li data-requirement="length">At least 8 characters</li>
                   <li data-requirement="uppercase">One uppercase letter</li>
+                  <li data-requirement="lowercase">One lowercase letter</li>
                   <li data-requirement="number">One number</li>
                   <li data-requirement="special">One special character</li>
                 </ul>