diff --git a/src/api/api.go b/src/api/api.go
index 8722a6f..4ac3419 100644
--- a/src/api/api.go
+++ b/src/api/api.go
@@ -53,9 +53,10 @@ type CreateGroupRequest struct {
 }
 
 type UpdateGroupRequest struct {
-	Base64Avatar *string `json:"base64_avatar"`
-	Description  *string `json:"description"`
-	Name         *string `json:"name"`
+	Base64Avatar   *string `json:"base64_avatar"`
+	Description    *string `json:"description"`
+	Name           *string `json:"name"`
+	ExpirationTime *int    `json:"expiration_time"`
 }
 
 type ChangeGroupMembersRequest struct {
@@ -1477,7 +1478,7 @@ func (a *Api) UpdateGroup(c *gin.Context) {
 		return
 	}
 
-	err = a.signalClient.UpdateGroup(number, internalGroupId, req.Base64Avatar, req.Description, req.Name)
+	err = a.signalClient.UpdateGroup(number, internalGroupId, req.Base64Avatar, req.Description, req.Name, req.ExpirationTime)
 	if err != nil {
 		c.JSON(400, Error{Msg: err.Error()})
 		return
diff --git a/src/client/client.go b/src/client/client.go
index 7767b31..a904727 100644
--- a/src/client/client.go
+++ b/src/client/client.go
@@ -1594,7 +1594,7 @@ func (s *SignalClient) QuitGroup(number string, groupId string) error {
 	return err
 }
 
-func (s *SignalClient) UpdateGroup(number string, groupId string, base64Avatar *string, groupDescription *string, groupName *string) error {
+func (s *SignalClient) UpdateGroup(number string, groupId string, base64Avatar *string, groupDescription *string, groupName *string, expirationTime *int) error {
 	var err error
 	var avatarTmpPath string = ""
 	if base64Avatar != nil {
@@ -1638,6 +1638,7 @@ func (s *SignalClient) UpdateGroup(number string, groupId string, base64Avatar *
 			Avatar      string  `json:"avatar,omitempty"`
 			Description *string `json:"description,omitempty"`
 			Name        *string `json:"name,omitempty"`
+			Expiration  int     `json:"expiration,omitempty"`
 		}
 		request := Request{GroupId: groupId}
 
@@ -1648,6 +1649,10 @@ func (s *SignalClient) UpdateGroup(number string, groupId string, base64Avatar *
 		request.Description = groupDescription
 		request.Name = groupName
 
+		if expirationTime != nil {
+			request.Expiration = *expirationTime
+		}
+
 		jsonRpc2Client, err := s.getJsonRpc2Client()
 		if err != nil {
 			return err
@@ -1667,6 +1672,10 @@ func (s *SignalClient) UpdateGroup(number string, groupId string, base64Avatar *
 			cmd = append(cmd, []string{"-n", *groupName}...)
 		}
 
+		if expirationTime != nil {
+			cmd = append(cmd, []string{"--expiration", strconv.Itoa(*expirationTime)}...)
+		}
+
 		_, err = s.cliClient.Execute(true, cmd, "")
 	}
 
diff --git a/src/docs/docs.go b/src/docs/docs.go
index f743b6e..eb01da6 100644
--- a/src/docs/docs.go
+++ b/src/docs/docs.go
@@ -2455,6 +2455,9 @@ const docTemplate = `{
                 "description": {
                     "type": "string"
                 },
+                "expiration_time": {
+                    "type": "integer"
+                },
                 "name": {
                     "type": "string"
                 }
@@ -2712,8 +2715,6 @@ var SwaggerInfo = &swag.Spec{
 	Description:      "This is the Signal Cli REST API documentation.",
 	InfoInstanceName: "swagger",
 	SwaggerTemplate:  docTemplate,
-	LeftDelim:        "{{",
-	RightDelim:       "}}",
 }
 
 func init() {
diff --git a/src/docs/swagger.json b/src/docs/swagger.json
index c42cd1f..cc79997 100644
--- a/src/docs/swagger.json
+++ b/src/docs/swagger.json
@@ -2452,6 +2452,9 @@
                 "description": {
                     "type": "string"
                 },
+                "expiration_time": {
+                    "type": "integer"
+                },
                 "name": {
                     "type": "string"
                 }
diff --git a/src/docs/swagger.yaml b/src/docs/swagger.yaml
index 6375112..34fefb8 100644
--- a/src/docs/swagger.yaml
+++ b/src/docs/swagger.yaml
@@ -266,6 +266,8 @@ definitions:
         type: string
       description:
         type: string
+      expiration_time:
+        type: integer
       name:
         type: string
     type: object