diff --git a/app/models/application_setting_implementation.rb b/app/models/application_setting_implementation.rb
index d9b00c6d226..d548b88204f 100644
--- a/app/models/application_setting_implementation.rb
+++ b/app/models/application_setting_implementation.rb
@@ -14,7 +14,7 @@ module ApplicationSettingImplementation
   # Setting a key restriction to `-1` means that all keys of this type are
   # forbidden.
   FORBIDDEN_KEY_VALUE = KeyRestrictionValidator::FORBIDDEN
-  SUPPORTED_KEY_TYPES = %i[rsa dsa ecdsa ed25519].freeze
+  SUPPORTED_KEY_TYPES = Gitlab::SSHPublicKey.supported_types
   VALID_RUNNER_REGISTRAR_TYPES = %w(project group).freeze
 
   DEFAULT_PROTECTED_PATHS = [
diff --git a/lib/gitlab/ssh_public_key.rb b/lib/gitlab/ssh_public_key.rb
index 6df54852d02..e51ec38394d 100644
--- a/lib/gitlab/ssh_public_key.rb
+++ b/lib/gitlab/ssh_public_key.rb
@@ -19,6 +19,10 @@ module Gitlab
       TECHNOLOGIES.find { |tech| key.is_a?(tech.key_class) }
     end
 
+    def self.supported_types
+      TECHNOLOGIES.map(&:name)
+    end
+
     def self.supported_sizes(name)
       technology(name)&.supported_sizes
     end
diff --git a/spec/lib/gitlab/ssh_public_key_spec.rb b/spec/lib/gitlab/ssh_public_key_spec.rb
index e1a588a4b7d..d2ff7f2d7df 100644
--- a/spec/lib/gitlab/ssh_public_key_spec.rb
+++ b/spec/lib/gitlab/ssh_public_key_spec.rb
@@ -21,6 +21,14 @@ RSpec.describe Gitlab::SSHPublicKey, lib: true do
     end
   end
 
+  describe '.supported_types' do
+    it 'returns array with the names of supported technologies' do
+      expect(described_class.supported_types).to eq(
+        [:rsa, :dsa, :ecdsa, :ed25519]
+      )
+    end
+  end
+
   describe '.supported_sizes(name)' do
     where(:name, :sizes) do
       [
diff --git a/spec/models/application_setting_spec.rb b/spec/models/application_setting_spec.rb
index e91f85ce849..afea20b31b9 100644
--- a/spec/models/application_setting_spec.rb
+++ b/spec/models/application_setting_spec.rb
@@ -491,7 +491,7 @@ RSpec.describe ApplicationSetting do
 
     context 'key restrictions' do
       it 'supports all key types' do
-        expect(described_class::SUPPORTED_KEY_TYPES).to contain_exactly(:rsa, :dsa, :ecdsa, :ed25519)
+        expect(described_class::SUPPORTED_KEY_TYPES).to eq(Gitlab::SSHPublicKey.supported_types)
       end
 
       it 'does not allow all key types to be disabled' do