diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3cd88d62..4af1008f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,10 @@
 BUG FIXES:
 * runner: updated to hashicorp/nomad@1.7.2 to support `action` blocks [[GH-476](https://github.com/hashicorp/nomad-pack/pull/476)]
 
+IMPROVEMENTS:
+
+* cli: output the modify index after planning [[GH-507](https://github.com/hashicorp/nomad-pack/pull/507)]
+
 ## 0.1.0 (October 31, 2023)
 
 * **Generate Variable Override Files for Packs** - With
diff --git a/internal/runner/job/plan.go b/internal/runner/job/plan.go
index 30129187..2f75b637 100644
--- a/internal/runner/job/plan.go
+++ b/internal/runner/job/plan.go
@@ -13,6 +13,17 @@ import (
 	"github.com/hashicorp/nomad-pack/terminal"
 )
 
+const (
+	jobModifyIndexHelp = `To submit the job with version verification run:
+
+nomad-pack run %s --check-index=%d [options]
+
+When running the job with the check-index flag, the job will only be run if the
+job modify index given matches the server-side version. If the index has
+changed, another user has modified the job and the plan's results are
+potentially invalid.`
+)
+
 // PlanDeployment satisfies the PlanDeployment function of the runner.Runner
 // interface.
 func (r *Runner) PlanDeployment(ui terminal.UI, errCtx *errors.UIErrorContext) (int, []*errors.WrappedUIContext) {
@@ -58,6 +69,7 @@ func (r *Runner) PlanDeployment(ui terminal.UI, errCtx *errors.UIErrorContext) (
 		}
 
 		exitCode = runner.HigherPlanCode(exitCode, r.outputPlannedJob(ui, parsedJob.Job(), planResponse))
+		r.formatJobModifyIndex(planResponse.JobModifyIndex, ui)
 	}
 
 	if outputErrors != nil || len(outputErrors) > 0 {
@@ -138,6 +150,12 @@ func (r *Runner) outputPlannedJob(ui terminal.UI, job *api.Job, resp *api.JobPla
 	return getExitCode(resp)
 }
 
+// formatJobModifyIndex produces a help string that displays the job modify
+// index and how to submit a job with it.
+func (r *Runner) formatJobModifyIndex(jobModifyIndex uint64, ui terminal.UI) {
+	ui.AppendToRow(jobModifyIndexHelp, r.runnerCfg.PackName, jobModifyIndex, terminal.WithStyle(terminal.BoldStyle))
+}
+
 func getExitCode(resp *api.JobPlanResponse) int {
 	for _, d := range resp.Annotations.DesiredTGUpdates {
 		if d.Stop+d.Place+d.Migrate+d.DestructiveUpdate+d.Canary > 0 {