diff --git a/docker/lib/dependabot/docker/file_fetcher.rb b/docker/lib/dependabot/docker/file_fetcher.rb
index e0bb1267344..abfb5161718 100644
--- a/docker/lib/dependabot/docker/file_fetcher.rb
+++ b/docker/lib/dependabot/docker/file_fetcher.rb
@@ -1,5 +1,6 @@
 # frozen_string_literal: true
 
+require "dependabot/docker/utils/helpers"
 require "dependabot/experiments"
 require "dependabot/file_fetchers"
 require "dependabot/file_fetchers/base"
@@ -9,7 +10,6 @@ module Docker
     class FileFetcher < Dependabot::FileFetchers::Base
       YAML_REGEXP = /^[^\.]+\.ya?ml$/i
       DOCKER_REGEXP = /dockerfile/i
-      HELM_REGEXP = /values[\-a-zA-Z_0-9]*\.ya?ml$/i
 
       def self.required_files_in?(filenames)
         filenames.any? { |f| f.match?(DOCKER_REGEXP) } or
@@ -86,7 +86,7 @@ def likely_kubernetes_resource?(resource)
       def correctly_encoded_yamlfiles
         candidate_files = yamlfiles.select { |f| f.content.valid_encoding? }
         candidate_files.select do |f|
-          if f.type == "file" && f.name.match?(HELM_REGEXP)
+          if f.type == "file" && Utils.likely_helm_chart?(f)
             true
           else
             # This doesn't handle multi-resource files, but it shouldn't matter, since the first resource
diff --git a/docker/lib/dependabot/docker/file_updater.rb b/docker/lib/dependabot/docker/file_updater.rb
index 05ab0a4d6aa..1ca62e2958b 100644
--- a/docker/lib/dependabot/docker/file_updater.rb
+++ b/docker/lib/dependabot/docker/file_updater.rb
@@ -1,5 +1,6 @@
 # frozen_string_literal: true
 
+require "dependabot/docker/utils/helpers"
 require "dependabot/file_updaters"
 require "dependabot/file_updaters/base"
 require "dependabot/errors"
@@ -152,7 +153,7 @@ def private_registry_url(file)
       end
 
       def updated_yaml_content(file)
-        updated_content = file.name == "values.yaml" ? update_helm(file) : update_image(file)
+        updated_content = Utils.likely_helm_chart?(file) ? update_helm(file) : update_image(file)
 
         raise "Expected content to change!" if updated_content == file.content
 
diff --git a/docker/lib/dependabot/docker/utils/helpers.rb b/docker/lib/dependabot/docker/utils/helpers.rb
new file mode 100644
index 00000000000..f0546e8c373
--- /dev/null
+++ b/docker/lib/dependabot/docker/utils/helpers.rb
@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+module Dependabot
+  module Docker
+    module Utils
+      HELM_REGEXP = /values[\-a-zA-Z_0-9]*\.ya?ml$/i
+
+      def self.likely_helm_chart?(file)
+        file.name.match?(HELM_REGEXP)
+      end
+    end
+  end
+end
diff --git a/docker/spec/dependabot/docker/file_updater_spec.rb b/docker/spec/dependabot/docker/file_updater_spec.rb
index 24b4400ee85..bcdfdc86263 100644
--- a/docker/spec/dependabot/docker/file_updater_spec.rb
+++ b/docker/spec/dependabot/docker/file_updater_spec.rb
@@ -1139,7 +1139,7 @@
   let(:helmfile) do
     Dependabot::DependencyFile.new(
       content: helmfile_body,
-      name: "values.yaml"
+      name: "values.yaml" # TODO not sure if I need to replace the filenames here or if I can override later in a specific test
     )
   end
   let(:helmfile_body) { fixture("helm", "yaml", "values.yaml") }
diff --git a/docker/spec/dependabot/docker/utils/helpers_spec.rb b/docker/spec/dependabot/docker/utils/helpers_spec.rb
new file mode 100644
index 00000000000..7c2d75ce6ac
--- /dev/null
+++ b/docker/spec/dependabot/docker/utils/helpers_spec.rb
@@ -0,0 +1,33 @@
+# # frozen_string_literal: true
+
+require "dependabot/dependency_file"
+require "dependabot/docker/utils/helpers"
+require "spec_helper"
+
+RSpec.describe Dependabot::Docker::Utils.likely_helm_chart? do
+  describe "#likely_helm_chart?" do
+    matching_filenames = [
+      "other-values.yml",
+      "other-values.yaml",
+      "other_values.yml",
+      "other_values.yaml",
+      "values.yml",
+      "values.yaml",
+      "values-other.yml",
+      "values-other.yaml",
+      "values_other.yml",
+      "values_other.yaml",
+      "values2.yml",
+      "values2.yaml"
+    ]
+    matching_filenames.each do |fname|
+      it "should return `true` for matching value '#{fname}'" do
+        fake_file = Dependabot::DependencyFile.new(
+          name: fname,
+          content: "fake content"
+        )
+        expect(self.likely_helm_chart?(fake_file)).to be true
+      end
+    end
+  end
+end