diff --git a/README.md b/README.md
index f0fd8ab7..2dfe6cf7 100644
--- a/README.md
+++ b/README.md
@@ -36,7 +36,6 @@ jQuery-QueryBuilder is available on [jsDelivr](https://www.jsdelivr.com/package/
  * [Bootstrap 5](https://getbootstrap.com/docs/5.3/) CSS and bundle.js which includes `Popper` for tooltips and popovers
  * [Bootstrap Icons](https://icons.getbootstrap.com/) 
  * [jQuery.extendext](https://github.com/mistic100/jQuery.extendext)
- * [MomentJS](https://momentjs.com) (optional, for Date/Time validation)
  * [SQL Parser](https://github.com/mistic100/sql-parser) (optional, for SQL methods)
  * Other Bootstrap/jQuery plugins used by plugins
 
diff --git a/package.json b/package.json
index 4111f3a0..72b8dff4 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
     "bootstrap-icons": "^1.11.3",
     "jquery": "^3.5.1",
     "jquery-extendext": "^1.0.0",
-    "moment": "^2.29.1",
+    "dayjs": "^1.11.13",
     "sql-parser-mistic": "^1.2.3"
   },
   "devDependencies": {
diff --git a/src/data.js b/src/data.js
index 7f466940..0a7f8de5 100644
--- a/src/data.js
+++ b/src/data.js
@@ -170,24 +170,28 @@ QueryBuilder.prototype._validateValue = function(rule, value) {
 
                             // we need MomentJS
                             if (validation.format) {
-                                if (!('moment' in window)) {
-                                    Utils.error('MissingLibrary', 'MomentJS is required for Date/Time validation. Get it here http://momentjs.com');
-                                }
-
-                                var datetime = moment(tempValue[j], validation.format);
+                                if (dayjs in window) {
+                                    window.momenty = window.dayjs;
+                                } else if ('moment' in window) {
+                                    window.momenty = window.moment;
+                                } else {
+                                    Utils.error('MissingLibrary', 'DayJS or MomentJS is required for Date/Time validation. Get it here https://day.js.org/ or https://momentjs.com');
+                                } 
+            
+                                var datetime = momenty(tempValue[j], validation.format);
                                 if (!datetime.isValid()) {
                                     result = [this.getValidationMessage(validation, 'format', 'datetime_invalid'), validation.format];
                                     break;
                                 }
                                 else {
                                     if (validation.min) {
-                                        if (datetime < moment(validation.min, validation.format)) {
+                                        if (datetime < momenty(validation.min, validation.format)) {
                                             result = [this.getValidationMessage(validation, 'min', 'datetime_exceed_min'), validation.min];
                                             break;
                                         }
                                     }
                                     if (validation.max) {
-                                        if (datetime > moment(validation.max, validation.format)) {
+                                        if (datetime > momenty(validation.max, validation.format)) {
                                             result = [this.getValidationMessage(validation, 'max', 'datetime_exceed_max'), validation.max];
                                             break;
                                         }
@@ -231,12 +235,17 @@ QueryBuilder.prototype._validateValue = function(rule, value) {
 
             case 'datetime':
                 // we need MomentJS
+                
                 if (validation.format) {
-                    if (!('moment' in window)) {
-                        Utils.error('MissingLibrary', 'MomentJS is required for Date/Time validation. Get it here http://momentjs.com');
-                    }
-
-                    if (moment(value[0], validation.format).isAfter(moment(value[1], validation.format))) {
+                    if (dayjs in window) {
+                        window.momenty = window.dayjs;
+                    } else if ('moment' in window) {
+                        window.momenty = window.moment;
+                    } else {
+                        Utils.error('MissingLibrary', 'DayJS or MomentJS is required for Date/Time validation. Get it here https://day.js.org/ or https://momentjs.com');
+                    } 
+
+                    if (momenty(value[0], validation.format).isAfter(momenty(value[1], validation.format))) {
                         result = ['datetime_between_invalid', value[0], value[1]];
                     }
                 }
diff --git a/tests/index.html b/tests/index.html
index e322dcfd..717ec1fa 100644
--- a/tests/index.html
+++ b/tests/index.html
@@ -22,7 +22,7 @@
   <script src="../node_modules/bootstrap/dist/js/bootstrap.js"></script>
   <script src="../node_modules/chosenjs/chosen.jquery.js"></script>
   <script src="../node_modules/bootbox/bootbox.js"></script>
-  <script src="../node_modules/moment/moment.js"></script>
+  <script src="../node_modules/dayjs/dayjs.js"></script>
   <script src="../node_modules/sql-parser-mistic/browser/sql-parser.js"></script>
   <script src="../node_modules/jquery-extendext/jquery-extendext.js"></script>
   <script src="../node_modules/dot/doT.js"></script>
diff --git a/yarn.lock b/yarn.lock
index 3a1b8f09..0281a846 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -766,7 +766,6 @@ foodoc@^0.0.9:
     handlebars-layouts "^3.1.4"
     jsdoc "^3.5.5"
     lunr "^1.0.0"
-    moment "^2.22.1"
     sanitize-html "^1.18.2"
 
 for-in@^1.0.1:
@@ -1545,11 +1544,6 @@ mkdirp@^1.0.4:
   resolved "https://registry.npmjs.org/mkdirp/-/mkdirp-1.0.4.tgz"
   integrity sha512-vVqVZQyf3WLx2Shd0qJ9xuvqgAyKPLAiqITEtqW0oIUjzo3PePDd6fW9iFz30ef7Ysp/oiWqbhszeGWW2T6Gzw==
 
-moment@^2.22.1, moment@^2.29.1:
-  version "2.29.4"
-  resolved "https://registry.npmjs.org/moment/-/moment-2.29.4.tgz"
-  integrity sha512-5LC9SOxjSc2HF6vO2CyuTDNivEdoz2IvyJJGj6X8DJ0eFyfszE0QiEd+iXmBvUP3WHxSjFH/vIsA0EN00cgr8w==
-
 morgan@^1.10.0:
   version "1.10.0"
   resolved "https://registry.npmjs.org/morgan/-/morgan-1.10.0.tgz"