diff --git a/Gemfile.lock b/Gemfile.lock
index e2b8f26..839e7dc 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,11 +11,11 @@ GEM
       minitest (>= 5.1)
       mutex_m
       tzinfo (~> 2.0)
-    addressable (2.8.6)
-      public_suffix (>= 2.0.2, < 6.0)
+    addressable (2.8.7)
+      public_suffix (>= 2.0.2, < 7.0)
     ast (2.4.2)
     base64 (0.2.0)
-    bigdecimal (3.1.6)
+    bigdecimal (3.1.8)
     coderay (1.1.3)
     concurrent-ruby (1.2.3)
     connection_pool (2.4.1)
@@ -27,7 +27,7 @@ GEM
     dotenv (3.0.2)
     drb (2.2.0)
       ruby2_keywords
-    hashdiff (1.1.0)
+    hashdiff (1.1.1)
     httparty (0.21.0)
       mini_mime (>= 1.0.0)
       multi_xml (>= 0.5.2)
@@ -50,12 +50,12 @@ GEM
     pry (0.14.2)
       coderay (~> 1.1)
       method_source (~> 1.0)
-    public_suffix (5.0.4)
+    public_suffix (6.0.1)
     racc (1.7.3)
     rainbow (3.1.1)
     rake (13.1.0)
     regexp_parser (2.9.0)
-    rexml (3.3.3)
+    rexml (3.3.5)
       strscan
     rspec (3.13.0)
       rspec-core (~> 3.13.0)
@@ -106,7 +106,7 @@ GEM
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
     unicode-display_width (2.5.0)
-    webmock (3.20.0)
+    webmock (3.23.1)
       addressable (>= 2.8.0)
       crack (>= 0.3.2)
       hashdiff (>= 0.4.0, < 2.0.0)