diff --git a/lib/gtfs/model/class_methods.rb b/lib/gtfs/model/class_methods.rb
index 7634a00..af572b3 100644
--- a/lib/gtfs/model/class_methods.rb
+++ b/lib/gtfs/model/class_methods.rb
@@ -74,7 +74,7 @@ def parse_model(attr_hash, options={})
         unprefixed_attr_hash = {}
 
         attr_hash.each do |key, val|
-          unprefixed_attr_hash[key.gsub(/^#{prefix}/, '')] = val
+          unprefixed_attr_hash[key.gsub(/^#{prefix}/, '').gsub(/[^a-zA-Z_]/, '')] = val
         end
 
         model = self.new(unprefixed_attr_hash)
diff --git a/lib/gtfs/version.rb b/lib/gtfs/version.rb
index 90aff31..3a1806f 100644
--- a/lib/gtfs/version.rb
+++ b/lib/gtfs/version.rb
@@ -1,3 +1,3 @@
 module GTFS
-  VERSION = '0.3.1'
+  VERSION = '0.3.2'
 end