diff --git a/Gemfile b/Gemfile
index 9ee1591e..2f14b15d 100644
--- a/Gemfile
+++ b/Gemfile
@@ -9,7 +9,7 @@ group :development do
   gem "rspec", "3.8.0"
   gem "rspec-collection_matchers"
 
-  gem "yard","~> 0.9.20"
+  gem "yard","~> 0.9.35"
 # gem "redcarpet","~> 3.4.0", :platforms => [:mri]
 
   # https://github.com/colszowka/simplecov#ruby-version-compatibility
diff --git a/Gemfile.lock b/Gemfile.lock
index 343e6b68..4448fd51 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -28,7 +28,7 @@ GEM
     term-ansicolor (1.7.1)
       tins (~> 1.0)
     tins (1.20.2)
-    yard (0.9.20)
+    yard (0.9.35)
 
 PLATFORMS
   java
@@ -42,7 +42,7 @@ DEPENDENCIES
   simplecov (>= 0.16.1)
   simplecov-inline-html
   term-ansicolor
-  yard (~> 0.9.20)
+  yard (~> 0.9.35)
 
 BUNDLED WITH
    2.4.19