diff --git a/Gemfile.lock b/Gemfile.lock
index b91edc1..247f928 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -30,7 +30,7 @@ GEM
     debug_inspector (0.0.3)
     deep_merge (1.2.1)
     diff-lcs (1.3)
-    docile (1.3.1)
+    docile (1.3.2)
     domain_name (0.5.20170404)
       unf (>= 0.0.5, < 1.0.0)
     dry-configurable (0.8.1)
@@ -70,7 +70,7 @@ GEM
       concurrent-ruby (~> 1.0)
     interception (0.5)
     jaro_winkler (1.5.2)
-    json (2.1.0)
+    json (2.2.0)
     method_source (0.9.2)
     mime-types (3.1)
       mime-types-data (~> 3.2015)
@@ -123,7 +123,7 @@ GEM
       ruby-progressbar (~> 1.7)
       unicode-display_width (~> 1.4.0)
     ruby-progressbar (1.10.0)
-    simplecov (0.16.1)
+    simplecov (0.17.1)
       docile (~> 1.1)
       json (>= 1.8, < 3)
       simplecov-html (~> 0.10.0)
@@ -152,7 +152,7 @@ DEPENDENCIES
   rake (~> 12.0)
   rspec (~> 3.7)
   rubocop (~> 0.65.0)
-  simplecov (~> 0.16.1)
+  simplecov (~> 0.17.1)
 
 BUNDLED WITH
    2.0.1
diff --git a/git-shell.gemspec b/git-shell.gemspec
index ce8d29e..9bdcc8b 100644
--- a/git-shell.gemspec
+++ b/git-shell.gemspec
@@ -37,7 +37,7 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'rake', '~> 12.0'
   spec.add_development_dependency 'rspec', '~> 3.7'
   spec.add_development_dependency 'rubocop', '~> 0.65.0'
-  spec.add_development_dependency 'simplecov', '~> 0.16.1'
+  spec.add_development_dependency 'simplecov', '~> 0.17.1'
 
   spec.add_dependency 'config', '>= 1.6.1', '< 1.8.0'
   spec.add_dependency 'rest-client', '~> 2.0.2'