diff --git a/Gemfile b/Gemfile
index 0e9265a..d50e7e4 100644
--- a/Gemfile
+++ b/Gemfile
@@ -3,4 +3,4 @@
 source "https://rubygems.org"
 
 gem "rake", "~> 13.1"
-gem "rspec", "~> 3.12"
+gem "rspec", "~> 3.13"
diff --git a/Gemfile.lock b/Gemfile.lock
index c083c4c..527566a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,21 +1,21 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    diff-lcs (1.5.0)
+    diff-lcs (1.5.1)
     rake (13.1.0)
-    rspec (3.12.0)
-      rspec-core (~> 3.12.0)
-      rspec-expectations (~> 3.12.0)
-      rspec-mocks (~> 3.12.0)
-    rspec-core (3.12.0)
-      rspec-support (~> 3.12.0)
-    rspec-expectations (3.12.0)
+    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 (3.12.0)
+      rspec-support (~> 3.13.0)
+    rspec-mocks (3.13.0)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.12.0)
-    rspec-support (3.12.0)
+      rspec-support (~> 3.13.0)
+    rspec-support (3.13.0)
 
 PLATFORMS
   x86_64-darwin-19
@@ -23,7 +23,7 @@ PLATFORMS
 
 DEPENDENCIES
   rake (~> 13.1)
-  rspec (~> 3.12)
+  rspec (~> 3.13)
 
 BUNDLED WITH
    2.3.20