diff --git a/.travis.yml b/.travis.yml
index 30a095a..17b8fc6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -21,6 +21,7 @@ gemfile:
   - gemfiles/rails-4.2.gemfile
   - gemfiles/rails-5.0.gemfile
   - gemfiles/rails-5.1.gemfile
+  - gemfiles/rails-5.2.gemfile
 
 matrix:
   exclude:
@@ -62,3 +63,12 @@ matrix:
       gemfile: gemfiles/rails-5.1.gemfile
     - rvm: 2.1.8
       gemfile: gemfiles/rails-5.1.gemfile
+    # rails 5.2 requires ruby 2.2.2+
+    - rvm: 1.9.2
+      gemfile: gemfiles/rails-5.2.gemfile
+    - rvm: 1.9.3
+      gemfile: gemfiles/rails-5.2.gemfile
+    - rvm: 2.0.0
+      gemfile: gemfiles/rails-5.2.gemfile
+    - rvm: 2.1.8
+      gemfile: gemfiles/rails-5.2.gemfile
diff --git a/gemfiles/rails-5.2.gemfile b/gemfiles/rails-5.2.gemfile
new file mode 100644
index 0000000..6522b0f
--- /dev/null
+++ b/gemfiles/rails-5.2.gemfile
@@ -0,0 +1,5 @@
+source "https://rubygems.org"
+
+gem "rails", "~> 5.2.0"
+
+gemspec path: "../"
diff --git a/lib/acts_as_tree.rb b/lib/acts_as_tree.rb
index c933dbc..6021e34 100644
--- a/lib/acts_as_tree.rb
+++ b/lib/acts_as_tree.rb
@@ -355,7 +355,10 @@ def leaf?
 
     private
 
-    if ActiveRecord::VERSION::MAJOR > 5 || ActiveRecord::VERSION::MAJOR == 5 && ActiveRecord::VERSION::MINOR >= 1
+    if ActiveRecord::VERSION::MAJOR > 5 || ActiveRecord::VERSION::MAJOR == 5 && ActiveRecord::VERSION::MINOR >= 2
+      def update_parents_counter_cache
+      end
+    elsif ActiveRecord::VERSION::MAJOR == 5 && ActiveRecord::VERSION::MINOR == 1
       def update_parents_counter_cache
         counter_cache_column = self.class.children_counter_cache_column