diff --git a/src/Model/EnvelopeTemplateDefinition.php b/src/Model/EnvelopeTemplateDefinition.php
index 8841f55f..b7b6ac3b 100644
--- a/src/Model/EnvelopeTemplateDefinition.php
+++ b/src/Model/EnvelopeTemplateDefinition.php
@@ -561,6 +561,7 @@ public function setUri($uri)
      * @param  integer $offset Offset
      * @return boolean
      */
+    #[\ReturnTypeWillChange]
     public function offsetExists($offset)
     {
         return isset($this->container[$offset]);
@@ -571,6 +572,7 @@ public function offsetExists($offset)
      * @param  integer $offset Offset
      * @return mixed
      */
+    #[\ReturnTypeWillChange]
     public function offsetGet($offset)
     {
         return isset($this->container[$offset]) ? $this->container[$offset] : null;
@@ -582,6 +584,7 @@ public function offsetGet($offset)
      * @param  mixed   $value  Value to be set
      * @return void
      */
+    #[\ReturnTypeWillChange]
     public function offsetSet($offset, $value)
     {
         if (is_null($offset)) {
@@ -596,6 +599,7 @@ public function offsetSet($offset, $value)
      * @param  integer $offset Offset
      * @return void
      */
+    #[\ReturnTypeWillChange]
     public function offsetUnset($offset)
     {
         unset($this->container[$offset]);