diff --git a/.ruby-version b/.ruby-version
index aedc15bb..d48d3702 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-2.5.3
+2.6.9
diff --git a/Gemfile.lock b/Gemfile.lock
index 9bf8fc89..2889d162 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,13 +1,13 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    actionview (6.1.1)
-      activesupport (= 6.1.1)
+    actionview (6.1.4.6)
+      activesupport (= 6.1.4.6)
       builder (~> 3.1)
       erubi (~> 1.4)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.1, >= 1.2.0)
-    activesupport (6.1.1)
+    activesupport (6.1.4.6)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 1.6, < 2)
       minitest (>= 5.1)
@@ -15,9 +15,8 @@ GEM
       zeitwerk (~> 2.3)
     addressable (2.8.0)
       public_suffix (>= 2.0.2, < 5.0)
-    backports (3.18.1)
     builder (3.2.4)
-    concurrent-ruby (1.1.7)
+    concurrent-ruby (1.1.9)
     cookiejar (0.3.3)
     coveralls (0.8.23)
       json (>= 1.8, < 3)
@@ -28,12 +27,12 @@ GEM
     crass (1.0.6)
     debase (0.2.4.1)
       debase-ruby_core_source (>= 0.10.2)
-    debase-ruby_core_source (0.10.12)
-    docile (1.3.2)
+    debase-ruby_core_source (0.10.14)
+    docile (1.4.0)
     domain_name (0.5.20190701)
       unf (>= 0.0.5, < 1.0.0)
     dotenv (2.7.6)
-    em-http-request (1.1.6)
+    em-http-request (1.1.7)
       addressable (>= 2.3.4)
       cookiejar (!= 0.3.1)
       em-socksify (>= 0.3)
@@ -46,53 +45,53 @@ GEM
     erubi (1.10.0)
     eventmachine (1.2.7)
     http-accept (1.7.0)
-    http-cookie (1.0.3)
+    http-cookie (1.0.4)
       domain_name (~> 0.5)
-    http_parser.rb (0.6.0)
-    i18n (1.8.7)
+    http_parser.rb (0.8.0)
+    i18n (1.10.0)
       concurrent-ruby (~> 1.0)
-    json (2.3.1)
-    kgio (2.11.3)
+    json (2.6.1)
+    kgio (2.11.4)
     kramdown (2.3.1)
       rexml
-    loofah (2.8.0)
+    loofah (2.14.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.1)
       mini_mime (>= 0.1.1)
-    mime-types (3.3.1)
+    mime-types (3.4.1)
       mime-types-data (~> 3.2015)
-    mime-types-data (3.2020.0512)
-    mini_mime (1.0.2)
-    mini_portile2 (2.6.1)
-    minitest (5.14.3)
-    money (6.13.8)
+    mime-types-data (3.2022.0105)
+    mini_mime (1.1.2)
+    mini_portile2 (2.8.0)
+    minitest (5.15.0)
+    money (6.16.0)
       i18n (>= 0.6.4, <= 2)
     multi_json (1.15.0)
     mustermann (1.1.1)
       ruby2_keywords (~> 0.0.1)
     netrc (0.11.0)
-    nokogiri (1.12.5)
-      mini_portile2 (~> 2.6.1)
+    nokogiri (1.13.3)
+      mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
-    oj (3.10.7)
+    oj (3.13.11)
     pony (1.13.1)
       mail (>= 2.0)
     public_suffix (4.0.6)
-    racc (1.5.2)
+    racc (1.6.0)
     rack (2.2.3)
-    rack-protection (2.0.8.1)
+    rack-protection (2.2.0)
       rack
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
-    rails-html-sanitizer (1.3.0)
+    rails-html-sanitizer (1.4.2)
       loofah (~> 2.3)
-    raindrops (0.19.1)
-    rake (13.0.1)
-    rake-compiler (1.1.1)
+    raindrops (0.20.0)
+    rake (13.0.6)
+    rake-compiler (1.1.9)
       rake
     rest-client (2.1.0)
       http-accept (>= 1.7.0, < 2.0)
@@ -101,43 +100,42 @@ GEM
       netrc (~> 0.8)
     rest-open-uri (1.0.0)
     rexml (3.2.5)
-    ruby-debug-ide (0.7.2)
+    ruby-debug-ide (0.7.3)
       rake (>= 0.8.1)
-    ruby2_keywords (0.0.2)
-    rubygems-update (3.1.4)
+    ruby2_keywords (0.0.5)
+    rubygems-update (3.3.8)
     simplecov (0.16.1)
       docile (~> 1.1)
       json (>= 1.8, < 3)
       simplecov-html (~> 0.10.0)
     simplecov-html (0.10.2)
-    sinatra (2.0.8.1)
+    sinatra (2.2.0)
       mustermann (~> 1.0)
-      rack (~> 2.0)
-      rack-protection (= 2.0.8.1)
+      rack (~> 2.2)
+      rack-protection (= 2.2.0)
       tilt (~> 2.0)
-    sinatra-contrib (2.0.8.1)
-      backports (>= 2.8.2)
+    sinatra-contrib (2.2.0)
       multi_json
       mustermann (~> 1.0)
-      rack-protection (= 2.0.8.1)
-      sinatra (= 2.0.8.1)
+      rack-protection (= 2.2.0)
+      sinatra (= 2.2.0)
       tilt (~> 2.0)
     sync (0.5.0)
     term-ansicolor (1.7.1)
       tins (~> 1.0)
-    thor (1.0.1)
+    thor (1.2.1)
     tilt (2.0.10)
-    tins (1.25.0)
+    tins (1.31.0)
       sync
     tzinfo (2.0.4)
       concurrent-ruby (~> 1.0)
     unf (0.1.4)
       unf_ext
-    unf_ext (0.0.7.7)
-    unicorn (5.5.5)
+    unf_ext (0.0.8)
+    unicorn (6.1.0)
       kgio (~> 2.6)
       raindrops (~> 0.7)
-    zeitwerk (2.4.2)
+    zeitwerk (2.5.4)
 
 PLATFORMS
   ruby