diff --git a/lib/rubocop/cop/minitest/skip_ensure.rb b/lib/rubocop/cop/minitest/skip_ensure.rb
index 9ff6bd2..af8b3bf 100644
--- a/lib/rubocop/cop/minitest/skip_ensure.rb
+++ b/lib/rubocop/cop/minitest/skip_ensure.rb
@@ -86,10 +86,10 @@ def use_skip_in_rescue?(skip_method)
 
         def valid_conditional_skip?(skip_method, ensure_node)
           if_node = skip_method.ancestors.detect(&:if_type?)
-          return false unless ensure_node.body.if_type?
+          return false unless ensure_node.branch.if_type?
 
-          match_keyword = ensure_node.body.if? ? if_node.if? : if_node.unless?
-          match_keyword && ensure_node.body.condition == if_node.condition
+          match_keyword = ensure_node.branch.if? ? if_node.if? : if_node.unless?
+          match_keyword && ensure_node.branch.condition == if_node.condition
         end
       end
     end
diff --git a/rubocop-minitest.gemspec b/rubocop-minitest.gemspec
index a609252..686823f 100644
--- a/rubocop-minitest.gemspec
+++ b/rubocop-minitest.gemspec
@@ -33,5 +33,5 @@ Gem::Specification.new do |spec|
   spec.require_paths = ['lib']
 
   spec.add_dependency 'rubocop', '>= 1.61', '< 2.0'
-  spec.add_dependency 'rubocop-ast', '>= 1.31.1', '< 2.0'
+  spec.add_dependency 'rubocop-ast', '>= 1.36.1', '< 2.0'
 end