diff --git a/internal/commands/common.go b/internal/commands/common.go
index 89255fb..c0af0f4 100644
--- a/internal/commands/common.go
+++ b/internal/commands/common.go
@@ -253,6 +253,7 @@ func handleNewVersionAvailable(currentVersion string) {
 
 	prefixedVersion := "go" + currentVersion
 	showLatest := false
+	zap.L().Warn("Upgrade to CLI v1.0.0+ required. Builds/deployments created via this version are not supported on earlier versions. Update now to ensure full compatibility.")
 	if !version.IsValid(prefixedVersion) {
 		zap.L().Warn("You are using a development version of the hathora cli.")
 		showLatest = true