diff --git a/Gemfile.lock b/Gemfile.lock
index 5afab6d697..78b80e91f1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -17,7 +17,7 @@ GEM
     docile (1.4.0)
     mini_mime (1.1.1)
     mini_portile2 (2.6.1)
-    mustermann (1.1.1)
+    mustermann (2.0.2)
       ruby2_keywords (~> 0.0.1)
     nokogiri (1.12.3)
       mini_portile2 (~> 2.6.1)
@@ -27,8 +27,8 @@ GEM
       ast (~> 2.4.1)
     public_suffix (4.0.6)
     racc (1.5.2)
-    rack (2.2.3)
-    rack-protection (2.1.0)
+    rack (2.2.4)
+    rack-protection (2.2.3)
       rack
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -71,14 +71,14 @@ GEM
       terminal-table
     simplecov-html (0.12.3)
     simplecov_json_formatter (0.1.3)
-    sinatra (2.1.0)
-      mustermann (~> 1.0)
+    sinatra (2.2.3)
+      mustermann (~> 2.0)
       rack (~> 2.2)
-      rack-protection (= 2.1.0)
+      rack-protection (= 2.2.3)
       tilt (~> 2.0)
     terminal-table (3.0.1)
       unicode-display_width (>= 1.1.1, < 3)
-    tilt (2.0.10)
+    tilt (2.0.11)
     unicode-display_width (2.0.0)
     xpath (3.2.0)
       nokogiri (~> 1.8)