diff --git a/src/Npm.php b/src/Npm.php
index a92df91..cfc9bbf 100644
--- a/src/Npm.php
+++ b/src/Npm.php
@@ -95,7 +95,7 @@ private function findPackagesFromCdnMatches(string $content)
 
     private function findPackagesFromLocalMatches(string $content)
     {
-        preg_match_all('/^Importmap::pin\([\'\"](.+?)[\'\"].*\)\;\s*\/\/\s*.*@(.+?)\s+.*\r?$/m', $content, $matches);
+        preg_match_all('/^Importmap::pin\([\'\"](.+?)[\'\"].*\)\;\s*\/\/\s*.*@(\d+\.\d+\.\d+.*?)\s+.*\r?$/m', $content, $matches);
 
         if (count($matches) !== 3) {
             return collect();