diff --git a/Gemfile b/Gemfile
index 9843166a..9f45e823 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,7 +2,7 @@ source 'https://rubygems.org'
 
 gem 'dalli', '~> 2.7.6'  # memcached client
 gem 'fast_gettext', '~> 1.8.0'
-gem 'grape', '~> 0.19.2'
+gem 'grape', '~> 1.4.0'
 gem 'grape-swagger', '~> 0.33.0'
 gem 'innate', '~> 2015.10.28'
 gem 'mini_magick', '~> 4.9.5'
diff --git a/Gemfile.lock b/Gemfile.lock
index 49175c45..590db3e3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -8,25 +8,21 @@ GIT
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (6.0.0)
+    activesupport (6.0.3.2)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-      zeitwerk (~> 2.1, >= 2.1.8)
+      zeitwerk (~> 2.2, >= 2.2.2)
     addressable (2.7.0)
       public_suffix (>= 2.0.2, < 5.0)
     archive-tar-minitar (0.8)
       minitar (~> 0.8)
       minitar-cli (~> 0.8)
-    axiom-types (0.1.1)
-      descendants_tracker (~> 0.0.4)
-      ice_nine (~> 0.11.0)
-      thread_safe (~> 0.3, >= 0.3.1)
     bcrypt (3.1.13)
     bcrypt-ruby (3.1.5)
       bcrypt (>= 3.1.3)
-    builder (3.2.3)
+    builder (3.2.4)
     byebug (11.0.1)
     capybara (3.29.0)
       addressable
@@ -38,18 +34,35 @@ GEM
       xpath (~> 3.2)
     childprocess (3.0.0)
     coderay (1.1.2)
-    coercible (1.0.0)
-      descendants_tracker (~> 0.0.1)
     columnize (0.9.0)
-    concurrent-ruby (1.1.5)
+    concurrent-ruby (1.1.6)
     curb (0.9.10)
     daemons (1.3.1)
     dalli (2.7.10)
     debugger-ruby_core_source (1.3.8)
-    descendants_tracker (0.0.4)
-      thread_safe (~> 0.3, >= 0.3.1)
     diff-lcs (1.3)
-    equalizer (0.0.11)
+    dry-configurable (0.11.6)
+      concurrent-ruby (~> 1.0)
+      dry-core (~> 0.4, >= 0.4.7)
+      dry-equalizer (~> 0.2)
+    dry-container (0.7.2)
+      concurrent-ruby (~> 1.0)
+      dry-configurable (~> 0.1, >= 0.1.3)
+    dry-core (0.4.9)
+      concurrent-ruby (~> 1.0)
+    dry-equalizer (0.3.0)
+    dry-inflector (0.2.0)
+    dry-logic (1.0.6)
+      concurrent-ruby (~> 1.0)
+      dry-core (~> 0.2)
+      dry-equalizer (~> 0.2)
+    dry-types (1.4.0)
+      concurrent-ruby (~> 1.0)
+      dry-container (~> 0.3)
+      dry-core (~> 0.4, >= 0.4.4)
+      dry-equalizer (~> 0.3)
+      dry-inflector (~> 0.1, >= 0.1.2)
+      dry-logic (~> 1.0, >= 1.0.2)
     eventmachine (1.2.7)
     factory_girl (4.9.0)
       activesupport (>= 3.0.0)
@@ -57,22 +70,18 @@ GEM
     ffi (1.13.1)
     gpgme (2.0.20)
       mini_portile2 (~> 2.3)
-    grape (0.19.2)
+    grape (1.4.0)
       activesupport
       builder
-      hashie (>= 2.1.0)
-      multi_json (>= 1.3.2)
-      multi_xml (>= 0.5.2)
+      dry-types (>= 1.1)
       mustermann-grape (~> 1.0.0)
       rack (>= 1.3.0)
       rack-accept
-      virtus (>= 1.0.0)
     grape-swagger (0.33.0)
       grape (>= 0.16.2)
-    hashie (3.6.0)
-    i18n (1.7.0)
+    hashie (4.1.0)
+    i18n (1.8.4)
       concurrent-ruby (~> 1.0)
-    ice_nine (0.11.2)
     innate (2015.10.28)
       rack (~> 1.6.4)
     json (2.2.0)
@@ -94,12 +103,11 @@ GEM
     minitar-cli (0.8)
       minitar (~> 0.8.0)
       powerbar (~> 1.0)
-    minitest (5.12.2)
-    multi_json (1.14.1)
-    multi_xml (0.6.0)
-    mustermann (1.0.3)
-    mustermann-grape (1.0.0)
-      mustermann (~> 1.0.0)
+    minitest (5.14.1)
+    mustermann (1.1.1)
+      ruby2_keywords (~> 0.0.1)
+    mustermann-grape (1.0.1)
+      mustermann (>= 1.0.0)
     net-ldap (0.16.2)
     nokogiri (1.10.10)
       mini_portile2 (~> 2.4.0)
@@ -114,7 +122,7 @@ GEM
       byebug (~> 11.0)
       pry (~> 0.10)
     public_suffix (4.0.1)
-    rack (1.6.11)
+    rack (1.6.13)
     rack-accept (0.4.5)
       rack (>= 0.4)
     rack-test (1.1.0)
@@ -157,6 +165,7 @@ GEM
       ruby-debug-base19 (>= 0.11.19)
     ruby-filemagic (0.7.2)
     ruby-oembed (0.13.1)
+    ruby2_keywords (0.0.2)
     ruby_core_source (0.1.5)
       archive-tar-minitar (>= 0.5.2)
     rubyzip (2.0.0)
@@ -174,19 +183,14 @@ GEM
       eventmachine (~> 1.0, >= 1.0.4)
       rack (>= 1, < 3)
     thread_safe (0.3.6)
-    tzinfo (1.2.5)
+    tzinfo (1.2.7)
       thread_safe (~> 0.1)
     unicorn (5.5.1)
       kgio (~> 2.6)
       raindrops (~> 0.7)
-    virtus (1.0.5)
-      axiom-types (~> 0.1)
-      coercible (~> 1.0)
-      descendants_tracker (~> 0.0, >= 0.0.3)
-      equalizer (~> 0.0, >= 0.0.9)
     xpath (3.2.0)
       nokogiri (~> 1.8)
-    zeitwerk (2.2.0)
+    zeitwerk (2.4.0)
 
 PLATFORMS
   ruby
@@ -199,7 +203,7 @@ DEPENDENCIES
   factory_girl
   fast_gettext (~> 1.8.0)
   gpgme (~> 2.0.20)
-  grape (~> 0.19.2)
+  grape (~> 1.4.0)
   grape-swagger (~> 0.33.0)
   innate (~> 2015.10.28)
   json (~> 2.2.0)