diff --git a/Gemfile b/Gemfile
index 7dfeacc..088a552 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,7 +5,7 @@ source 'https://rubygems.org'
 ruby '2.6.5'
 
 gem 'haml', '~> 6.0'
-gem 'iso-639', '~> 0.3.5'
+gem 'iso-639', '~> 0.3.6'
 gem 'json', '~> 2.6'
 gem 'mail', '~> 2.7'
 gem 'mime-types', '~> 3.4'
diff --git a/Gemfile.lock b/Gemfile.lock
index a1544af..d0722bd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -22,7 +22,7 @@ GEM
     http-accept (1.7.0)
     http-cookie (1.0.3)
       domain_name (~> 0.5)
-    iso-639 (0.3.5)
+    iso-639 (0.3.6)
     json (2.6.2)
     kgio (2.11.4)
     mail (2.7.1)
@@ -114,7 +114,7 @@ PLATFORMS
 DEPENDENCIES
   byebug (~> 11.1)
   haml (~> 6.0)
-  iso-639 (~> 0.3.5)
+  iso-639 (~> 0.3.6)
   json (~> 2.6)
   mail (~> 2.7)
   mime-types (~> 3.4)