diff --git a/lib/license_finder/package_managers/mix.rb b/lib/license_finder/package_managers/mix.rb
index 4d27eccd2..ce671add2 100644
--- a/lib/license_finder/package_managers/mix.rb
+++ b/lib/license_finder/package_managers/mix.rb
@@ -21,6 +21,10 @@ def self.package_management_command
       'mix'
     end
 
+    def self.prepare_command
+      'mix deps.get'
+    end
+
     private
 
     def mix_output
diff --git a/spec/lib/license_finder/package_managers/mix_spec.rb b/spec/lib/license_finder/package_managers/mix_spec.rb
index 18fa2e1b6..6e800a9e5 100644
--- a/spec/lib/license_finder/package_managers/mix_spec.rb
+++ b/spec/lib/license_finder/package_managers/mix_spec.rb
@@ -73,5 +73,12 @@ module LicenseFinder
         expect(current_packages.map(&:install_path)).to eq([Pathname('foo/fs'), Pathname('foo/gettext'), Pathname('foo/uuid-refknown'), Pathname('foo/uuid')])
       end
     end
+
+    describe '.prepare_command' do
+      it 'returns the correct prepare method' do
+        expect(described_class.prepare_command).to eq('mix deps.get')
+      end
+    end
+
   end
 end