diff --git a/fixtures/rails52_webpack_no_sprockets/Gemfile.lock b/fixtures/rails52_webpack_no_sprockets/Gemfile.lock
index 4365bd45c..9c8e1bf29 100644
--- a/fixtures/rails52_webpack_no_sprockets/Gemfile.lock
+++ b/fixtures/rails52_webpack_no_sprockets/Gemfile.lock
@@ -89,18 +89,22 @@ GEM
     marcel (0.3.3)
       mimemagic (~> 0.3.2)
     method_source (0.9.2)
-    mimemagic (0.3.2)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.1)
-    mini_portile2 (2.3.0)
+    mini_portile2 (2.6.1)
     minitest (5.11.3)
     msgpack (1.2.4)
     multi_json (1.13.1)
     nio4r (2.3.1)
-    nokogiri (1.8.5)
-      mini_portile2 (~> 2.3.0)
+    nokogiri (1.12.5)
+      mini_portile2 (~> 2.6.1)
+      racc (~> 1.4)
     pg (1.1.3)
     public_suffix (3.0.3)
     puma (3.12.0)
+    racc (1.7.3)
     rack (2.0.6)
     rack-proxy (0.6.5)
       rack