diff --git a/Gemfile.lock b/Gemfile.lock
index 5cfcb6eb0..d844e057a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -131,7 +131,7 @@ GEM
     base64 (0.2.0)
     bcrypt (3.1.20)
     benchmark-ips (2.14.0)
-    bigdecimal (3.1.7)
+    bigdecimal (3.1.8)
     bindata (2.5.0)
     bindex (0.8.1)
     bootsnap (1.18.4)
@@ -371,8 +371,7 @@ GEM
       bindata
       faraday (~> 2.0)
       faraday-follow_redirects
-    json_schemer (2.2.1)
-      base64
+    json_schemer (2.3.0)
       bigdecimal
       hana (~> 1.3)
       regexp_parser (~> 2.0)
@@ -599,7 +598,7 @@ GEM
       redis-client (>= 0.22.0)
     redis-client (0.22.1)
       connection_pool
-    regexp_parser (2.9.2)
+    regexp_parser (2.9.3)
     reline (0.5.12)
       io-console (~> 0.5)
     request_store (1.5.1)
@@ -746,8 +745,7 @@ GEM
       simplecov (~> 0.19)
     simplecov-html (0.12.3)
     simplecov_json_formatter (0.1.4)
-    simpleidn (0.2.1)
-      unf (~> 0.1.4)
+    simpleidn (0.2.3)
     sinatra (3.2.0)
       mustermann (~> 3.0)
       rack (~> 2.2, >= 2.2.4)
@@ -800,9 +798,6 @@ GEM
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
     ulid-ruby (1.0.2)
-    unf (0.1.4)
-      unf_ext
-    unf_ext (0.0.9.1)
     unicode-display_width (2.6.0)
     uri (0.13.0)
     validate_url (1.0.15)