diff --git a/lib/helpers/regexes/mix.regexes.js b/lib/helpers/regexes/mix.regexes.js
index 67b16b8..1b8a6f3 100644
--- a/lib/helpers/regexes/mix.regexes.js
+++ b/lib/helpers/regexes/mix.regexes.js
@@ -9,7 +9,7 @@ import {
  * RegEx to parse the project name from mix.exs content
  */
 const mixProjectNameRegex = RegExp(
-  /(?<=\bdef project\b)(?:(?!\bend\b).)+?app:\s*:([A-Za-z0-9_@]+)+?.+?(?=end)/,
+  /(?<=\bdef project\b)(?:(?!\bend\b).)+?app:\s*:([A-Za-z0-9_@]{1,255})+?.+?(?=end)/,
   "s",
 );