diff --git a/internal/cli/atlas_alerts_acknowledge.go b/internal/cli/atlas_alerts_acknowledge.go
index c9926b9f10..afdbbcf8b8 100644
--- a/internal/cli/atlas_alerts_acknowledge.go
+++ b/internal/cli/atlas_alerts_acknowledge.go
@@ -31,6 +31,7 @@ type atlasAlertsAcknowledgeOpts struct {
 	alertID string
 	until   string
 	comment string
+	forever bool
 	store   store.AlertAcknowledger
 }
 
@@ -52,20 +53,18 @@ func (opts *atlasAlertsAcknowledgeOpts) Run() error {
 }
 
 func (opts *atlasAlertsAcknowledgeOpts) newAcknowledgeRequest() *atlas.AcknowledgeRequest {
-	until := opts.until
-
 	// To acknowledge an alert “forever”, set the field value to 100 years in the future.
-	if until == "" {
-		until = time.Now().AddDate(100, 1, 1).Format(time.RFC3339)
+	if opts.forever {
+		opts.until = time.Now().AddDate(100, 1, 1).Format(time.RFC3339)
 	}
 
 	return &atlas.AcknowledgeRequest{
-		AcknowledgedUntil:      until,
+		AcknowledgedUntil:      opts.until,
 		AcknowledgementComment: opts.comment,
 	}
 }
 
-// mongocli atlas alerts acknowledge alertID --projectId projectId
+// mongocli atlas alerts acknowledge alertID --projectId projectId --forever
 func AtlasAlertsAcknowledgeBuilder() *cobra.Command {
 	opts := new(atlasAlertsAcknowledgeOpts)
 	cmd := &cobra.Command{
@@ -82,6 +81,7 @@ func AtlasAlertsAcknowledgeBuilder() *cobra.Command {
 		},
 	}
 
+	cmd.Flags().BoolVarP(&opts.forever, flags.Forever, flags.ForeverShort, false, usage.Forever)
 	cmd.Flags().StringVar(&opts.until, flags.Until, "", usage.Until)
 	cmd.Flags().StringVar(&opts.comment, flags.Comment, "", usage.Comment)
 
diff --git a/internal/flags/flags.go b/internal/flags/flags.go
index 4791458806..d38a65fbdb 100644
--- a/internal/flags/flags.go
+++ b/internal/flags/flags.go
@@ -27,6 +27,8 @@ const (
 	Members                         = "members"                         // Members flag
 	MembersShort                    = "m"                               // MembersShort flag
 	Tier                            = "tier"                            // Tier flag
+	Forever                         = "forever"                         // Forever flag
+	ForeverShort                    = "F"                               // ForeverShort flag
 	DiskSizeGB                      = "diskSizeGB"                      // DiskSizeGB flag
 	MDBVersion                      = "mdbVersion"                      // MDBVersion flag
 	Backup                          = "backup"                          // Backup flag
diff --git a/internal/usage/usage.go b/internal/usage/usage.go
index 70ed7936b0..00d44ca4e3 100644
--- a/internal/usage/usage.go
+++ b/internal/usage/usage.go
@@ -26,6 +26,7 @@ const (
 	AuthDB                          = "Authentication database name."
 	Granularity                     = "Duration in ISO 8601 notation that specifies the interval between measurement data points."
 	Page                            = "Page number."
+	Forever                         = "Acknowledge an alert “forever”."
 	Status                          = "Alert's status."
 	Until                           = "Acknowledged until a date."
 	Limit                           = "Number of items per page."