diff --git a/lib/license_finder/package_managers/go_modules.rb b/lib/license_finder/package_managers/go_modules.rb
index 1e720ef43..d94e42fde 100644
--- a/lib/license_finder/package_managers/go_modules.rb
+++ b/lib/license_finder/package_managers/go_modules.rb
@@ -12,7 +12,7 @@ def takes_priority_over
       end
 
       def prepare_command
-        'go mod vendor'
+        'GOMOD111MODULE=on go mod vendor'
       end
     end
 
diff --git a/spec/lib/license_finder/package_managers/go_modules_spec.rb b/spec/lib/license_finder/package_managers/go_modules_spec.rb
index 8fe512307..195be87fe 100644
--- a/spec/lib/license_finder/package_managers/go_modules_spec.rb
+++ b/spec/lib/license_finder/package_managers/go_modules_spec.rb
@@ -55,7 +55,7 @@ module LicenseFinder
 
     describe '.prepare_command' do
       it 'returns the correct package management command' do
-        expect(described_class.prepare_command).to eq('go mod vendor')
+        expect(described_class.prepare_command).to eq('GOMOD111MODULE=on go mod vendor')
       end
     end