diff --git a/core/vendors.py b/core/vendors.py
index 1d03ff36..057e4ece 100644
--- a/core/vendors.py
+++ b/core/vendors.py
@@ -196,7 +196,7 @@ def check_vendor(self):
                         else:
                             version = 'latest'
 
-                        var_reg = "\${(\w+)}"
+                        var_reg = "\${([\w\.\_-]+)}"
                         if re.search(var_reg, version, re.I):
                             p2 = re.compile(var_reg)
                             matchs = p2.finditer(version)