partitions-metadata.json in aws-partitions-1.970.0 vs partitions-metadata.json in aws-partitions-1.971.0

@@ -7,10 +7,10 @@
       "implicitGlobalRegion" : "us-east-1",
       "name" : "aws",
       "supportsDualStack" : true,
       "supportsFIPS" : true
     },
-    "regionRegex" : "^(us|eu|ap|sa|ca|me|af|il)\\-\\w+\\-\\d+$",
+    "regionRegex" : "^(us|eu|ap|sa|ca|me|af|il|mx)\\-\\w+\\-\\d+$",
     "regions" : {
       "af-south-1" : {
         "description" : "Africa (Cape Town)"
       },
       "ap-east-1" : {
\ No newline at end of file