diff --git a/Gemfile.lock b/Gemfile.lock
index e6ecd3e..b692432 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -20,7 +20,7 @@ GEM
     ast (2.4.2)
     coderay (1.1.3)
     concurrent-ruby (1.1.10)
-    diff-lcs (1.4.4)
+    diff-lcs (1.5.0)
     i18n (1.10.0)
       concurrent-ruby (~> 1.0)
     method_source (1.0.0)
@@ -43,10 +43,10 @@ GEM
     rspec-expectations (3.10.1)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.10.0)
-    rspec-mocks (3.10.2)
+    rspec-mocks (3.10.3)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.10.0)
-    rspec-support (3.10.2)
+    rspec-support (3.10.3)
     rspec_junit_formatter (0.4.1)
       rspec-core (>= 2, < 4, != 2.12.0)
     rubocop (0.54.0)