diff --git a/Gemfile.lock b/Gemfile.lock
index 72af066b..0e560e08 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -211,8 +211,7 @@ GEM
     js-routes (2.2.8)
       railties (>= 4)
     json (2.7.2)
-    json_schemer (2.2.1)
-      base64
+    json_schemer (2.3.0)
       bigdecimal
       hana (~> 1.3)
       regexp_parser (~> 2.0)
@@ -399,7 +398,7 @@ GEM
     rbtree (0.4.6)
     rdoc (6.6.3.1)
       psych (>= 4.0.0)
-    regexp_parser (2.9.0)
+    regexp_parser (2.9.2)
     reline (0.5.7)
       io-console (~> 0.5)
     rexml (3.2.8)
@@ -499,8 +498,7 @@ GEM
       simplecov_json_formatter (~> 0.1)
     simplecov-html (0.12.3)
     simplecov_json_formatter (0.1.4)
-    simpleidn (0.2.2)
-      unf (~> 0.1.4)
+    simpleidn (0.2.3)
     slim (5.2.1)
       temple (~> 0.10.0)
       tilt (>= 2.1.0)
@@ -553,9 +551,6 @@ GEM
     turbolinks-source (5.2.0)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
-    unf (0.1.4)
-      unf_ext
-    unf_ext (0.0.9.1)
     unicode-display_width (2.5.0)
     uri (0.13.0)
     version_gem (1.1.4)