diff --git a/api/Gemfile.lock b/api/Gemfile.lock
index 7004955..4907c29 100644
--- a/api/Gemfile.lock
+++ b/api/Gemfile.lock
@@ -60,6 +60,7 @@ GEM
       execjs
     coffee-script-source (1.9.1.1)
     columnize (0.9.0)
+    concurrent-ruby (1.1.10)
     debug_inspector (0.0.2)
     diff-lcs (1.2.5)
     dotenv (2.0.2)
@@ -91,7 +92,8 @@ GEM
       guard (~> 2.1)
       guard-compat (~> 1.1)
       rspec (>= 2.99.0, < 4.0)
-    i18n (0.7.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     jbuilder (2.3.1)
       activesupport (>= 3.0.0, < 5)
       multi_json (~> 1.2)