diff --git a/Gemfile.lock b/Gemfile.lock
index 71bea92..6d7c00e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -12,11 +12,12 @@ GEM
       term-ansicolor (~> 1.3)
       thor (>= 0.19.4, < 2.0)
       tins (~> 1.6)
-    crack (0.4.3)
-      safe_yaml (~> 1.0.0)
+    crack (1.0.1)
+      bigdecimal
+      rexml
     csv (3.3.5)
     docile (1.4.1)
-    hashdiff (0.3.0)
+    hashdiff (1.2.1)
     httparty (0.24.0)
       csv
       mini_mime (>= 1.0.0)
@@ -39,8 +40,8 @@ GEM
       reline
     reline (0.6.3)
       io-console (~> 0.5)
+    rexml (3.4.4)
     ruby-progressbar (1.13.0)
-    safe_yaml (1.0.4)
     simplecov (0.16.1)
       docile (~> 1.1)
       json (>= 1.8, < 3)
@@ -56,10 +57,10 @@ GEM
       readline
       sync
     vcr (6.4.0)
-    webmock (2.1.0)
-      addressable (>= 2.3.6)
+    webmock (3.26.2)
+      addressable (>= 2.8.0)
       crack (>= 0.3.2)
-      hashdiff
+      hashdiff (>= 0.4.0, < 2.0.0)
     yard (0.9.42)
 
 PLATFORMS