diff --git a/Gemfile b/Gemfile
index 1d120b0..e190d5d 100644
--- a/Gemfile
+++ b/Gemfile
@@ -9,9 +9,9 @@ gem "oj_mimic_json", "~> 1.0", ">= 1.0.1"
 gem "equivalent-xml", "~> 0.6.0"
 gem "nokogiri", ">= 1.10.4"
 gem "iso8601", "~> 0.9.0"
-gem "bolognese", "~> 1.0"
-gem "maremma", "~> 4.1"
-gem "faraday", "0.17.0"
+gem "bolognese", "~> 1.9"
+gem "maremma", "~> 4.7"
+gem "faraday", "0.17.4"
 gem "base32-url", "~> 0.5"
 gem "dalli", "~> 2.7.6"
 gem "lograge", "~> 0.11.2"
diff --git a/Gemfile.lock b/Gemfile.lock
index f3c04ff..aa0b3e4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -44,6 +44,7 @@ GEM
       tzinfo (~> 1.1)
     addressable (2.7.0)
       public_suffix (>= 2.0.2, < 5.0)
+    amazing_print (1.3.0)
     arel (9.0.0)
     ast (2.4.2)
     base32-url (0.5)
@@ -56,31 +57,31 @@ GEM
       latex-decode (~> 0.0)
     binding_of_caller (1.0.0)
       debug_inspector (>= 0.0.1)
-    bolognese (1.6.11)
+    bolognese (1.9.5)
       activesupport (>= 4.2.5)
       benchmark_methods (~> 0.7)
       bibtex-ruby (>= 5.1.0)
       builder (~> 3.2, >= 3.2.2)
-      citeproc-ruby (~> 1.1, >= 1.1.10)
+      citeproc-ruby (~> 1.1, >= 1.1.12)
       colorize (~> 0.8.1)
       concurrent-ruby (~> 1.1, >= 1.1.5)
-      csl-styles (~> 1.0, >= 1.0.1.8)
+      csl-styles (~> 1.0, >= 1.0.1.10)
       edtf (~> 3.0, >= 3.0.4)
-      faraday (= 0.17.0)
+      faraday (~> 0.17.3)
       gender_detector (~> 0.1.2)
       iso8601 (~> 0.9.1)
-      json-ld (~> 3.1, >= 3.1.4)
+      json-ld-preloaded (~> 3.1, >= 3.1.3)
       jsonlint (~> 0.3.0)
       loofah (~> 2.0, >= 2.0.3)
-      maremma (>= 4.3, < 5)
+      maremma (>= 4.7, < 5)
       namae (~> 1.0)
-      nokogiri (~> 1.10.4)
+      nokogiri (~> 1.11.2)
       oj (~> 3.10)
       oj_mimic_json (~> 1.0, >= 1.0.1)
       postrank-uri (~> 1.0, >= 1.0.18)
       rdf-rdfxml (~> 3.1)
       rdf-turtle (~> 3.1)
-      thor (~> 1.0, >= 1.0.1)
+      thor (>= 0.19)
     bootsnap (1.7.3)
       msgpack (~> 1.0)
     builder (3.2.4)
@@ -109,29 +110,31 @@ GEM
     crass (1.0.6)
     csl (1.5.2)
       namae (~> 1.0)
-    csl-styles (1.0.1.10)
+    csl-styles (1.0.1.11)
       csl (~> 1.0)
     dalli (2.7.11)
     debug_inspector (1.1.0)
     diff-lcs (1.4.4)
     docile (1.1.5)
     dotenv (2.7.6)
-    ebnf (2.1.2)
+    ebnf (2.1.3)
+      amazing_print (~> 1.2)
       htmlentities (~> 4.3)
       rdf (~> 3.1)
       scanf (~> 1.0)
       sxp (~> 1.1)
+      unicode-types (~> 1.6)
     edtf (3.0.6)
       activesupport (>= 3.0, < 7.0)
     equivalent-xml (0.6.0)
       nokogiri (>= 1.4.3)
     erubi (1.10.0)
     excon (0.71.1)
-    faraday (0.17.0)
+    faraday (0.17.4)
       multipart-post (>= 1.2, < 3)
     faraday-encoding (0.0.5)
       faraday
-    faraday_middleware (0.13.1)
+    faraday_middleware (0.14.0)
       faraday (>= 0.7.4, < 1.0)
     ffi (1.15.0)
     gender_detector (0.1.2)
@@ -159,6 +162,9 @@ GEM
       multi_json (~> 1.14)
       rack (~> 2.0)
       rdf (~> 3.1)
+    json-ld-preloaded (3.1.5)
+      json-ld (~> 3.1)
+      rdf (~> 3.1)
     jsonlint (0.3.0)
       oj (~> 3)
       optimist (~> 3)
@@ -176,34 +182,35 @@ GEM
     logstash-event (1.2.02)
     logstash-logger (0.26.1)
       logstash-event (~> 1.2)
-    loofah (2.9.0)
+    loofah (2.9.1)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.1)
       mini_mime (>= 0.1.1)
     marcel (1.0.0)
-    maremma (4.7)
+    maremma (4.7.4)
       activesupport (>= 4.2.5)
       addressable (>= 2.3.6)
       builder (~> 3.2, >= 3.2.2)
       excon (~> 0.71.0)
-      faraday (= 0.17.0)
+      faraday (~> 0.17.3)
       faraday-encoding (~> 0.0.4)
-      faraday_middleware (~> 0.13.1)
-      nokogiri (~> 1.10.4)
+      faraday_middleware (~> 0.14.0)
+      nokogiri (~> 1.11.2)
       oj (>= 2.8.3)
       oj_mimic_json (~> 1.0, >= 1.0.1)
     method_source (1.0.0)
     mini_mime (1.0.3)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.5.1)
     minitest (5.14.4)
     msgpack (1.4.2)
     multi_json (1.15.0)
     multipart-post (2.1.1)
     namae (1.1.1)
     nio4r (2.5.7)
-    nokogiri (1.10.10)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.11.4)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
     oj (3.11.3)
     oj_mimic_json (1.0.1)
     optimist (3.0.1)
@@ -215,6 +222,7 @@ GEM
       nokogiri (>= 1.8.0)
       public_suffix (>= 2.0.0, < 2.1)
     public_suffix (2.0.5)
+    racc (1.5.2)
     rack (2.2.3)
     rack-cors (1.1.1)
       rack (>= 2.0.0)
@@ -280,7 +288,7 @@ GEM
     regexp_parser (2.1.1)
     request_store (1.5.0)
       rack (>= 1.4)
-    rexml (3.2.4)
+    rexml (3.2.5)
     rspec-core (3.9.3)
       rspec-support (~> 3.9.3)
     rspec-expectations (3.9.4)
@@ -342,6 +350,7 @@ GEM
     tzinfo-data (1.2021.1)
       tzinfo (>= 1.0.0)
     unicode-display_width (1.6.1)
+    unicode-types (1.6.0)
     unicode_utils (1.4.0)
     vcr (3.0.3)
     webmock (1.20.4)
@@ -360,7 +369,7 @@ DEPENDENCIES
   base32-url (~> 0.5)
   better_errors
   binding_of_caller
-  bolognese (~> 1.0)
+  bolognese (~> 1.9)
   bootsnap (>= 1.1.0)
   byebug
   cancancan (~> 2.0)
@@ -369,7 +378,7 @@ DEPENDENCIES
   dalli (~> 2.7.6)
   dotenv
   equivalent-xml (~> 0.6.0)
-  faraday (= 0.17.0)
+  faraday (= 0.17.4)
   git (~> 1.5)
   iso8601 (~> 0.9.0)
   jwt (~> 1.5, >= 1.5.4)
@@ -377,7 +386,7 @@ DEPENDENCIES
   lograge (~> 0.11.2)
   logstash-event (~> 1.2, >= 1.2.02)
   logstash-logger (~> 0.26.1)
-  maremma (~> 4.1)
+  maremma (~> 4.7)
   nokogiri (>= 1.10.4)
   oj (>= 2.8.3)
   oj_mimic_json (~> 1.0, >= 1.0.1)