diff --git a/Gemfile b/Gemfile
index 2ce002e..6a4fdf7 100644
--- a/Gemfile
+++ b/Gemfile
@@ -7,7 +7,7 @@ gem 'puma'
 gem 'i18n'
 gem 'bibtex-ruby'
 gem 'latex-decode'
-gem 'citeproc-ruby', '>= 1.1.6'
+gem 'citeproc-ruby', '>= 2.1.8'
 gem 'csl-styles'
 gem 'bibmarkdown', '~> 2.0.0'
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 49e72ac..98d9a09 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -96,7 +96,7 @@ GEM
     i18n (1.14.8)
       concurrent-ruby (~> 1.0)
     io-console (0.8.2)
-    json (2.19.5)
+    json (2.19.9)
     juwelier (2.4.9)
       builder
       bundler
@@ -191,7 +191,7 @@ GEM
     ruby2_keywords (0.0.5)
     securerandom (0.4.1)
     semver2 (3.4.2)
-    set (1.1.2)
+    set (1.1.3)
     singleton (0.3.0)
     sskatex (0.9.39)
       execjs (~> 2.7)
@@ -222,7 +222,7 @@ DEPENDENCIES
   bibmarkdown (~> 2.0.0)
   bibtex-ruby
   bundler (~> 4.0, >= 4.0.18)
-  citeproc-ruby (>= 1.1.6)
+  citeproc-ruby (>= 2.1.8)
   csl-styles
   execjs
   i18n
diff --git a/bin/template/Gemfile b/bin/template/Gemfile
index 28f2d10..5269ab8 100644
--- a/bin/template/Gemfile
+++ b/bin/template/Gemfile
@@ -16,7 +16,7 @@ gem 'sass'
 gem 'i18n', '< 1.14.9'
 gem 'latex-decode'
 gem 'unicode_utils'
-gem 'citeproc-ruby', '>= 1.1.6'
+gem 'citeproc-ruby', '>= 2.1.8'
 gem 'csl-styles'
 
 group :development do
diff --git a/bin/template/Gemfile.lock b/bin/template/Gemfile.lock
index 2dc73fb..9e8c170 100644
--- a/bin/template/Gemfile.lock
+++ b/bin/template/Gemfile.lock
@@ -81,7 +81,7 @@ GEM
       concurrent-ruby (~> 1.1)
       sorted_set (~> 1.0)
     io-console (0.8.2)
-    json (2.19.5)
+    json (2.19.9)
     json_schema (0.21.0)
     katex (0.10.0)
       execjs (~> 2.8)
@@ -195,7 +195,7 @@ GEM
       mini_racer
       puma
       sskatex
-    set (1.1.2)
+    set (1.1.3)
     shellany (0.0.1)
     singleton (0.3.0)
     slow_enumerator_tools (1.1.0)
@@ -227,7 +227,7 @@ PLATFORMS
   x86_64-linux-gnu
 
 DEPENDENCIES
-  citeproc-ruby (>= 1.1.6)
+  citeproc-ruby (>= 2.1.8)
   csl-styles
   csv (~> 3.3, >= 3.3.5)
   guard-livereload