diff --git a/kintsugi.gemspec b/kintsugi.gemspec
index dc676fa..89c89d4 100644
--- a/kintsugi.gemspec
+++ b/kintsugi.gemspec
@@ -23,7 +23,7 @@ Gem::Specification.new do |spec|
   spec.require_paths = ["lib"]
 
   spec.add_dependency "tty-prompt", "~> 0"
-  spec.add_dependency "xcodeproj", ">= 1.19.0", "<= 1.27.0"
+  spec.add_dependency "xcodeproj", ">= 1.26.0", "<= 1.27.0"
 
   spec.add_development_dependency "git", "~> 1.11"
   spec.add_development_dependency "rake", "~> 13.0"
diff --git a/lib/kintsugi/apply_change_to_project.rb b/lib/kintsugi/apply_change_to_project.rb
index 46905d6..3445954 100644
--- a/lib/kintsugi/apply_change_to_project.rb
+++ b/lib/kintsugi/apply_change_to_project.rb
@@ -107,7 +107,7 @@ def flatten_change(change, path)
 
     def apply_group_additions(project, additions, force_create_containing_group: false)
       additions.each do |change, path|
-        next unless %w[PBXGroup PBXVariantGroup].include?(change["isa"])
+        next unless %w[PBXGroup PBXVariantGroup PBXFileSystemSynchronizedRootGroup].include?(change["isa"])
 
         group_type = Module.const_get("Xcodeproj::Project::#{change["isa"]}")
         containing_group = project.group_or_file_at_path(path)
@@ -652,6 +652,8 @@ def add_child_to_component(component, change, change_path)
         add_file_reference(component, change, change_path)
       when "PBXGroup"
         add_group(component, change, change_path)
+      when "PBXFileSystemSynchronizedRootGroup"
+        add_file_system_synchronized_root_group(component, change, change_path)
       when "PBXContainerItemProxy"
         add_container_item_proxy(component, change, change_path)
       when "PBXTargetDependency"
@@ -1015,6 +1017,22 @@ def add_group(containing_component, change, change_path)
       end
     end
 
+    def add_file_system_synchronized_root_group(containing_component, change, change_path)
+      case containing_component
+      when Xcodeproj::Project::ObjectDictionary
+        # It is assumed that an `ObjectDictionary` always represents a project reference.
+        new_group = containing_component[:project_ref].project.new(Xcodeproj::Project::PBXFileSystemSynchronizedRootGroup)
+        containing_component[:product_group] = new_group
+        add_attributes_to_component(new_group, change, change_path)
+      when Xcodeproj::Project::PBXGroup
+        # Adding file system synchronized root groups to groups is handled by another part of the code.
+      else
+        raise MergeError, "Trying to add file system synchronized root group to an unsupported component type " \
+                          "#{containing_component.isa}. Change is: #{change}. Change path: " \
+                          "#{change_path}"
+      end
+    end
+
     def add_attributes_to_component(component, change, change_path, ignore_keys: [])
       change.each do |change_name, change_value|
         next if (%w[isa displayName] + ignore_keys).include?(change_name)