diff --git a/Gemfile b/Gemfile
index e8058f7d8..680ba3b02 100644
--- a/Gemfile
+++ b/Gemfile
@@ -7,7 +7,7 @@ gem "fastercsv", "~> 1.5.0", :platforms => [:mri_18, :mingw_18, :jruby]
 gem "builder", ">= 3.0.4"
 gem "request_store", "1.0.5"
 gem "mime-types"
-gem "rbpdf", "~> 1.18.2"
+gem "rbpdf", "~> 1.18.4"
 
 gem "i18n", "~> 0.6.11"