diff --git a/Gemfile.lock b/Gemfile.lock
index 96ca36d..1992fca 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -152,8 +152,7 @@ GEM
       rdoc (>= 4.0.0)
       reline (>= 0.4.2)
     json (2.7.2)
-    json_schemer (2.2.1)
-      base64
+    json_schemer (2.3.0)
       bigdecimal
       hana (~> 1.3)
       regexp_parser (~> 2.0)