diff --git a/Gemfile b/Gemfile
index 7cf71d26..f3743821 100644
--- a/Gemfile
+++ b/Gemfile
@@ -81,7 +81,7 @@ end
 gem 'jquery-rails'
 gem 'font-awesome-rails'
 gem 'wicked_pdf'
-gem 'wkhtmltopdf-binary'
+gem 'wkhtmltopdf-binary',  '0.12.4'
 #gem 'bootstrap', '~> 4.1.1'
 gem "bootstrap", ">= 4.3.1"
 gem 'oai'
diff --git a/Gemfile.lock b/Gemfile.lock
index 93a461d7..797aa4fa 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -251,7 +251,7 @@ GEM
     websocket-extensions (0.1.5)
     wicked_pdf (2.1.0)
       activesupport
-    wkhtmltopdf-binary (0.12.6)
+    wkhtmltopdf-binary (0.12.4)
     xpath (3.2.0)
       nokogiri (~> 1.8)
     xray-rails (0.3.2)
@@ -295,7 +295,7 @@ DEPENDENCIES
   uglifier (>= 1.3.0)
   web-console (>= 3.3.0)
   wicked_pdf
-  wkhtmltopdf-binary
+  wkhtmltopdf-binary (= 0.12.4)
   xray-rails
 
 BUNDLED WITH