diff --git a/Gemfile.lock b/Gemfile.lock
index 0e86454..5c3094d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -94,7 +94,8 @@ GEM
       numerizer (~> 0.1.1)
     concurrent-ruby (1.2.3)
     connection_pool (2.4.1)
-    crack (0.4.5)
+    crack (0.4.6)
+      bigdecimal
       rexml
     crass (1.0.6)
     date (3.3.4)