diff --git a/Gemfile.lock b/Gemfile.lock
index 6da4a91..b774c7c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -158,6 +158,7 @@ GEM
       faraday (>= 0.8, < 2)
     faraday_middleware (0.14.0)
       faraday (>= 0.7.4, < 1.0)
+    ffi (1.15.4)
     ffi (1.15.4-java)
     ffi (1.15.4-x64-mingw32)
     field_test (0.4.1)
@@ -235,6 +236,8 @@ GEM
       racc (~> 1.4)
     nokogiri (1.12.5-x64-mingw32)
       racc (~> 1.4)
+    nokogiri (1.12.5-x86_64-linux)
+      racc (~> 1.4)
     openlibrary-covers (0.1.1)
     orm_adapter (0.5.0)
     ostruct (0.4.0)
@@ -249,7 +252,7 @@ GEM
       nio4r (~> 2.0)
     racc (1.6.0)
     racc (1.6.0-java)
-    rack (2.2.3)
+    rack (2.2.3.1)
     rack-cors (1.1.1)
       rack (>= 2.0.0)
     rack-mini-profiler (2.3.3)
@@ -431,6 +434,7 @@ PLATFORMS
   java
   universal-java-1.8
   x64-mingw32
+  x86_64-linux
 
 DEPENDENCIES
   activerecord-jdbc-adapter (~> 60.2)