diff --git a/Gemfile.lock b/Gemfile.lock
index c61b6b7..16df8e2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,13 +1,13 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (5.2.0)
+    activesupport (5.2.1)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
     ast (2.4.0)
-    backports (3.11.3)
+    backports (3.11.4)
     codecov (0.1.10)
       json
       simplecov
@@ -17,14 +17,14 @@ GEM
     diff-lcs (1.3)
     docile (1.3.1)
     dotenv (2.5.0)
-    i18n (1.0.1)
+    i18n (1.1.0)
       concurrent-ruby (~> 1.0)
     jaro_winkler (1.5.1)
     json (2.1.0)
     method_source (0.9.0)
     minitest (5.11.3)
     multi_json (1.13.1)
-    mustermann (1.0.2)
+    mustermann (1.0.3)
     parallel (1.12.1)
     parser (2.5.1.2)
       ast (~> 2.4.0)
@@ -36,7 +36,7 @@ GEM
     puma (3.12.0)
     rack (2.0.5)
     rack-cors (1.0.2)
-    rack-protection (2.0.3)
+    rack-protection (2.0.4)
       rack
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -75,18 +75,18 @@ GEM
       json (>= 1.8, < 3)
       simplecov-html (~> 0.10.0)
     simplecov-html (0.10.2)
-    sinatra (2.0.3)
+    sinatra (2.0.4)
       mustermann (~> 1.0)
       rack (~> 2.0)
-      rack-protection (= 2.0.3)
+      rack-protection (= 2.0.4)
       tilt (~> 2.0)
-    sinatra-contrib (2.0.3)
+    sinatra-contrib (2.0.4)
       activesupport (>= 4.0.0)
       backports (>= 2.8.2)
       multi_json
       mustermann (~> 1.0)
-      rack-protection (= 2.0.3)
-      sinatra (= 2.0.3)
+      rack-protection (= 2.0.4)
+      sinatra (= 2.0.4)
       tilt (>= 1.3, < 3)
     thread_safe (0.3.6)
     tilt (2.0.8)