diff --git a/Gemfile.lock b/Gemfile.lock
index 44fd3c8..a5802f1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -7,7 +7,7 @@ GEM
     ast (2.4.0)
     diff-lcs (1.3)
     jaro_winkler (1.5.4)
-    mustermann (1.1.1)
+    mustermann (2.0.2)
       ruby2_keywords (~> 0.0.1)
     nio4r (2.5.7)
     parallel (1.19.1)
@@ -15,8 +15,8 @@ GEM
       ast (~> 2.4.0)
     puma (5.3.2)
       nio4r (~> 2.0)
-    rack (2.2.2)
-    rack-protection (2.0.8.1)
+    rack (2.2.4)
+    rack-protection (2.2.3)
       rack
     rainbow (3.0.0)
     rexml (3.1.9)
@@ -44,13 +44,13 @@ GEM
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 1.7)
     ruby-progressbar (1.10.1)
-    ruby2_keywords (0.0.2)
-    sinatra (2.0.8.1)
-      mustermann (~> 1.0)
-      rack (~> 2.0)
-      rack-protection (= 2.0.8.1)
+    ruby2_keywords (0.0.5)
+    sinatra (2.2.3)
+      mustermann (~> 2.0)
+      rack (~> 2.2)
+      rack-protection (= 2.2.3)
       tilt (~> 2.0)
-    tilt (2.0.10)
+    tilt (2.0.11)
     unicode-display_width (1.5.0)
     xml-simple (1.1.5)