diff --git a/Gemfile.lock b/Gemfile.lock
index 06a0b5c..c892b11 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,8 +11,8 @@ GEM
       public_suffix (>= 2.0.2, < 5.0)
     ast (2.4.0)
     coderay (1.1.2)
-    crack (0.4.3)
-      safe_yaml (~> 1.0.0)
+    crack (0.4.5)
+      rexml
     diff-lcs (1.3)
     dotenv (2.7.5)
     faraday (0.17.3)
@@ -27,9 +27,10 @@ GEM
     pry (0.13.0)
       coderay (~> 1.1)
       method_source (~> 1.0)
-    public_suffix (4.0.3)
+    public_suffix (4.0.6)
     rainbow (3.0.0)
     rake (13.0.1)
+    rexml (3.2.5)
     rspec (3.9.0)
       rspec-core (~> 3.9.0)
       rspec-expectations (~> 3.9.0)
@@ -51,10 +52,9 @@ GEM
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 1.7)
     ruby-progressbar (1.10.1)
-    safe_yaml (1.0.5)
     unicode-display_width (1.6.1)
     vcr (5.1.0)
-    webmock (3.8.3)
+    webmock (3.13.0)
       addressable (>= 2.3.6)
       crack (>= 0.3.2)
       hashdiff (>= 0.4.0, < 2.0.0)