diff --git a/Gemfile.lock b/Gemfile.lock
index 82ffb9b..b42dd3f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -12,14 +12,14 @@ GEM
   specs:
     Ascii85 (1.0.3)
     afm (0.2.2)
-    connection_pool (2.2.2)
+    connection_pool (2.2.3)
     domain_name (0.5.20190701)
       unf (>= 0.0.5, < 1.0.0)
     hashery (2.1.2)
     http-cookie (1.0.3)
       domain_name (~> 0.5)
     httpclient (2.8.3)
-    mechanize (2.7.6)
+    mechanize (2.7.7)
       domain_name (~> 0.5, >= 0.5.1)
       http-cookie (~> 1.0)
       mime-types (>= 1.17.2)
@@ -27,16 +27,18 @@ GEM
       net-http-persistent (>= 2.5.2)
       nokogiri (~> 1.6)
       ntlm-http (~> 0.1, >= 0.1.1)
+      webrick (~> 1.7)
       webrobots (>= 0.0.9, < 0.2)
-    mime-types (3.2.2)
+    mime-types (3.3.1)
       mime-types-data (~> 3.2015)
-    mime-types-data (3.2019.0331)
-    mini_portile2 (2.4.0)
+    mime-types-data (3.2020.1104)
+    mini_portile2 (2.5.0)
     net-http-digest_auth (1.4.1)
-    net-http-persistent (3.1.0)
+    net-http-persistent (4.0.1)
       connection_pool (~> 2.2)
-    nokogiri (1.10.4)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.11.1)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
     ntlm-http (0.1.1)
     pdf-reader (2.2.1)
       Ascii85 (~> 1.0.0)
@@ -44,6 +46,7 @@ GEM
       hashery (~> 2.0)
       ruby-rc4
       ttfunk
+    racc (1.5.2)
     ruby-rc4 (0.1.5)
     sqlite3 (1.4.1)
     sqlite_magic (0.0.6)
@@ -51,7 +54,8 @@ GEM
     ttfunk (1.5.1)
     unf (0.1.4)
       unf_ext
-    unf_ext (0.0.7.6)
+    unf_ext (0.0.7.7)
+    webrick (1.7.0)
     webrobots (0.1.2)
 
 PLATFORMS