diff --git a/Gemfile b/Gemfile
index 7036114..2ff9787 100644
--- a/Gemfile
+++ b/Gemfile
@@ -12,7 +12,7 @@ end
 group :test do
   # gem 'json', '~> 1.7', :platforms => [:jruby] look TODO needed?
   gem 'minitest', '~> 5.25.1'
-  gem 'mocha', '~> 2.5.0'
+  gem 'mocha', '~> 2.6.0'
   gem 'rack', '~> 3.1.8'
   gem 'netrc', '~> 0.11.0'
   gem 'rack-test', '~> 2'
diff --git a/Gemfile.lock b/Gemfile.lock
index 276bcac..4d740b1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -30,7 +30,7 @@ GEM
     faraday-rack (2.0.0)
       faraday (~> 2.0)
     minitest (5.25.1)
-    mocha (2.5.0)
+    mocha (2.6.0)
       ruby2_keywords (>= 0.0.5)
     multipart-post (2.3.0)
     netrc (0.11.0)
@@ -66,7 +66,7 @@ DEPENDENCIES
   faraday-rack (~> 2)
   looker-sdk!
   minitest (~> 5.25.1)
-  mocha (~> 2.5.0)
+  mocha (~> 2.6.0)
   netrc (~> 0.11.0)
   rack (~> 3.1.8)
   rack-test (~> 2)