diff --git a/Gemfile.lock b/Gemfile.lock
index 0f8f792..f87775f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -25,10 +25,8 @@ GEM
       pry (>= 0.13.0)
       shellany (~> 0.0)
       thor (>= 0.18.1)
-    guard-bundler (3.0.0)
-      bundler (>= 2.1, < 3)
-      guard (~> 2.2)
-      guard-compat (~> 1.1)
+    guard-bundler (0.1.2)
+      guard (>= 0.2.2)
     guard-compat (1.2.1)
     guard-rspec (4.7.3)
       guard (~> 2.1)
@@ -60,7 +58,8 @@ GEM
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     regexp_parser (2.1.1)
-    rexml (3.2.5)
+    rexml (3.2.8)
+      strscan (>= 3.0.9)
     rspec (3.10.0)
       rspec-core (~> 3.10.0)
       rspec-expectations (~> 3.10.0)
@@ -100,6 +99,7 @@ GEM
       simplecov_json_formatter (~> 0.1)
     simplecov-html (0.12.3)
     simplecov_json_formatter (0.1.3)
+    strscan (3.1.0)
     thor (1.1.0)
     unicode-display_width (2.1.0)
     vcr (6.0.0)