diff --git a/Gemfile b/Gemfile
index 4814a6d..3441452 100644
--- a/Gemfile
+++ b/Gemfile
@@ -6,7 +6,7 @@ gem "logger", "~> 1.6"
 
 group :development do
   gem "irb", "~> 1.11"
-  gem "rspec", "~> 3.12"
+  gem "rspec", "~> 3.13"
   gem "rubocop", "~> 1.60"
   gem "rubocop-github", "~> 0.20"
   gem "rubocop-performance", "~> 1.20"
diff --git a/Gemfile.lock b/Gemfile.lock
index c82c792..6f64443 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -16,14 +16,14 @@ GEM
     bigdecimal (3.1.4)
     concurrent-ruby (1.2.2)
     connection_pool (2.4.1)
-    diff-lcs (1.5.0)
+    diff-lcs (1.5.1)
     docile (1.4.0)
     drb (2.2.0)
       ruby2_keywords
     i18n (1.14.1)
       concurrent-ruby (~> 1.0)
     io-console (0.7.2)
-    irb (1.11.1)
+    irb (1.11.2)
       rdoc
       reline (>= 0.4.2)
     json (2.7.1)
@@ -46,19 +46,19 @@ GEM
     reline (0.4.2)
       io-console (~> 0.5)
     rexml (3.2.6)
-    rspec (3.12.0)
-      rspec-core (~> 3.12.0)
-      rspec-expectations (~> 3.12.0)
-      rspec-mocks (~> 3.12.0)
-    rspec-core (3.12.2)
-      rspec-support (~> 3.12.0)
-    rspec-expectations (3.12.3)
+    rspec (3.13.0)
+      rspec-core (~> 3.13.0)
+      rspec-expectations (~> 3.13.0)
+      rspec-mocks (~> 3.13.0)
+    rspec-core (3.13.0)
+      rspec-support (~> 3.13.0)
+    rspec-expectations (3.13.0)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.12.0)
-    rspec-mocks (3.12.6)
+      rspec-support (~> 3.13.0)
+    rspec-mocks (3.13.0)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.12.0)
-    rspec-support (3.12.1)
+      rspec-support (~> 3.13.0)
+    rspec-support (3.13.0)
     rubocop (1.60.2)
       json (~> 2.3)
       language_server-protocol (>= 3.17.0)
@@ -116,7 +116,7 @@ PLATFORMS
 DEPENDENCIES
   irb (~> 1.11)
   logger (~> 1.6)
-  rspec (~> 3.12)
+  rspec (~> 3.13)
   rubocop (~> 1.60)
   rubocop-github (~> 0.20)
   rubocop-performance (~> 1.20)
diff --git a/vendor/cache/diff-lcs-1.5.0.gem b/vendor/cache/diff-lcs-1.5.0.gem
deleted file mode 100644
index 3a25852..0000000
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diff --git a/vendor/cache/diff-lcs-1.5.1.gem b/vendor/cache/diff-lcs-1.5.1.gem
new file mode 100644
index 0000000..c070cb0
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diff --git a/vendor/cache/irb-1.11.1.gem b/vendor/cache/irb-1.11.1.gem
deleted file mode 100644
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diff --git a/vendor/cache/irb-1.11.2.gem b/vendor/cache/irb-1.11.2.gem
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index 0000000..4c0ec0a
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diff --git a/vendor/cache/rspec-3.12.0.gem b/vendor/cache/rspec-3.12.0.gem
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