diff --git a/Gemfile.lock b/Gemfile.lock
index e2b8647..15fc1e0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -119,7 +119,7 @@ GEM
     method_source (0.9.2)
     mimemagic (0.3.3)
     mini_mime (1.0.1)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.6.1)
     minitest (5.11.3)
     msgpack (1.2.10)
     msgpack (1.2.10-java)
@@ -127,13 +127,15 @@ GEM
     msgpack (1.2.10-x86-mingw32)
     nio4r (2.3.1)
     nio4r (2.3.1-java)
-    nokogiri (1.10.5)
-      mini_portile2 (~> 2.4.0)
-    nokogiri (1.10.5-java)
-    nokogiri (1.10.5-x64-mingw32)
-      mini_portile2 (~> 2.4.0)
-    nokogiri (1.10.5-x86-mingw32)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.12.5)
+      mini_portile2 (~> 2.6.1)
+      racc (~> 1.4)
+    nokogiri (1.12.5-java)
+      racc (~> 1.4)
+    nokogiri (1.12.5-x64-mingw32)
+      racc (~> 1.4)
+    nokogiri (1.12.5-x86-mingw32)
+      racc (~> 1.4)
     parallel (1.17.0)
     parser (2.6.3.0)
       ast (~> 2.4.0)
@@ -144,6 +146,8 @@ GEM
     public_suffix (3.1.0)
     puma (3.12.2)
     puma (3.12.2-java)
+    racc (1.5.2)
+    racc (1.5.2-java)
     rack (2.1.2)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)