diff --git a/cli/internal/util/run_opts.go b/cli/internal/util/run_opts.go
index 7f3c09c4d0079..c6feb6301b095 100644
--- a/cli/internal/util/run_opts.go
+++ b/cli/internal/util/run_opts.go
@@ -1,5 +1,7 @@
 package util
 
+import "strings"
+
 // EnvMode specifies if we will be using strict env vars
 type EnvMode string
 
@@ -12,6 +14,10 @@ const (
 	Strict EnvMode = "Strict"
 )
 
+func (s EnvMode) MarshalText() (text []byte, err error) {
+	return []byte(strings.ToLower(string(s))), nil
+}
+
 // RunOpts holds the options that control the execution of a turbo run
 type RunOpts struct {
 	// Force execution to be serially one-at-a-time