diff --git a/Gemfile b/Gemfile
index 11fd9276..8d356dcc 100644
--- a/Gemfile
+++ b/Gemfile
@@ -117,7 +117,7 @@ source 'https://rails-assets.org' do
   # for select with icon
   gem 'rails-assets-bootstrap-select'
   gem 'rails-assets-markdown'
-  gem 'rails-assets-to-markdown'
+  gem 'rails-assets-to-markdown', '~> 3'
 end
 
 # as date picker
diff --git a/Gemfile.lock b/Gemfile.lock
index 78fa27eb..f6764b5a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -415,7 +415,7 @@ GEM
     rails-assets-spectrum (1.8.0)
       rails-assets-jquery (>= 1.7.2)
     rails-assets-tinycolor (1.4.1)
-    rails-assets-to-markdown (3.0.0)
+    rails-assets-to-markdown (3.1.1)
     rails-assets-trianglify (1.2.0)
     rails-assets-waypoints (4.0.0)
     rails-controller-testing (1.0.4)
@@ -692,7 +692,7 @@ DEPENDENCIES
   rails-assets-momentjs!
   rails-assets-spectrum!
   rails-assets-tinycolor!
-  rails-assets-to-markdown!
+  rails-assets-to-markdown (~> 3)!
   rails-assets-trianglify!
   rails-assets-waypoints!
   rails-controller-testing