diff --git a/main.go b/main.go
index 3ada5d6..f6d5687 100644
--- a/main.go
+++ b/main.go
@@ -169,7 +169,7 @@ func setOutput(k, v string) (err error) {
 			err = cErr
 		}
 	}()
-	envMsg := fmt.Sprintf("%s=%s\n", k, strings.ReplaceAll(v, "\n", "\\n"))
+	envMsg := fmt.Sprintf("%s=\"%s\"\n", k, strings.ReplaceAll(v, "\n", "\\n"))
 
 	if _, err := envFile.Write([]byte(envMsg)); err != nil {
 		return errors.Wrap(err, "write to env file")