diff --git a/.goreleaser.yml b/.goreleaser.yml
index 763e1ee..5a65946 100644
--- a/.goreleaser.yml
+++ b/.goreleaser.yml
@@ -16,6 +16,7 @@ builds:
         goarch: arm64
     ldflags:
       - -s -w
+      - -X github.com/quantcli/withings-export-cli/cmd.version=v{{ .Version }}
 
 archives:
   - formats:
diff --git a/cmd/root.go b/cmd/root.go
index 7544c06..6410f2a 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -7,9 +7,15 @@ import (
 	"github.com/spf13/cobra"
 )
 
+// version is overwritten at release time via
+// -ldflags "-X github.com/quantcli/withings-export-cli/cmd.version=v1.2.0".
+// Setting rootCmd.Version below makes cobra register --version for free.
+var version = "dev"
+
 var rootCmd = &cobra.Command{
 	Use:          "withings-export",
 	Short:        "CLI to export health data from Withings",
+	Version:      version,
 	SilenceUsage: true,
 	Long: `withings-export reads your personal Withings health data — activity,
 sleep, workouts, body measurements, intraday samples — and prints it on