diff --git a/node_modules/protobufjs/src/root.js b/node_modules/protobufjs/src/root.js
index df6f11f..112f9e8 100644
--- a/node_modules/protobufjs/src/root.js
+++ b/node_modules/protobufjs/src/root.js
@@ -259,7 +259,7 @@ Root.prototype.resolveAll = function resolveAll() {
 };
 
 // only uppercased (and thus conflict-free) children are exposed, see below
-var exposeRe = /^[A-Z]/;
+var exposeRe = /^[A-Za-z]/;
 
 /**
  * Handles a deferred declaring extension field by creating a sister field to represent it within its extended type.