diff --git a/Gemfile.lock b/Gemfile.lock
index c61b6b7..eca325c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (5.2.0)
+    activesupport (5.2.4.3)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
@@ -13,16 +13,16 @@ GEM
       simplecov
       url
     coderay (1.1.2)
-    concurrent-ruby (1.0.5)
+    concurrent-ruby (1.1.6)
     diff-lcs (1.3)
     docile (1.3.1)
     dotenv (2.5.0)
-    i18n (1.0.1)
+    i18n (1.8.2)
       concurrent-ruby (~> 1.0)
     jaro_winkler (1.5.1)
     json (2.1.0)
     method_source (0.9.0)
-    minitest (5.11.3)
+    minitest (5.14.1)
     multi_json (1.13.1)
     mustermann (1.0.2)
     parallel (1.12.1)
@@ -90,7 +90,7 @@ GEM
       tilt (>= 1.3, < 3)
     thread_safe (0.3.6)
     tilt (2.0.8)
-    tzinfo (1.2.5)
+    tzinfo (1.2.7)
       thread_safe (~> 0.1)
     unicode-display_width (1.4.0)
     url (0.3.2)