diff --git a/lib/importmap/packager.rb b/lib/importmap/packager.rb
index 726ae25..237b9b6 100644
--- a/lib/importmap/packager.rb
+++ b/lib/importmap/packager.rb
@@ -70,7 +70,7 @@ def pin_options_for_package(package)
 
     return {} if raw_options.blank?
 
-    raw_options[:pin_options].split(/,\s|,/).each_with_object({}) do |option, hash|
+    raw_options[:pin_options].split(/,\s?/).each_with_object({}) do |option, hash|
       match_data = option.match(/^(?<option_name>[^:]*):[\s+]?["']?(?<option_value>.*[^"'])["']?$/)
 
       hash[match_data[:option_name]] = cast_option_value(match_data[:option_value])