diff --git a/lib/pact_broker/config/basic_auth_configuration.rb b/lib/pact_broker/config/basic_auth_configuration.rb
index 5a046bab0..5946beebf 100644
--- a/lib/pact_broker/config/basic_auth_configuration.rb
+++ b/lib/pact_broker/config/basic_auth_configuration.rb
@@ -20,6 +20,13 @@ def self.included(anyway_config)
 
           sensitive_values(:basic_auth_password, :basic_auth_read_only_password)
 
+          coerce_types(
+            basic_auth_username: :string,
+            basic_auth_password: :string,
+            basic_auth_read_only_username: :string,
+            basic_auth_read_only_password: :string
+          )
+
           def basic_auth_credentials_provided?
             basic_auth_username&.not_blank? && basic_auth_password&.not_blank?
           end
diff --git a/lib/pact_broker/config/runtime_configuration_database_methods.rb b/lib/pact_broker/config/runtime_configuration_database_methods.rb
index fd674b454..2bc499e7a 100644
--- a/lib/pact_broker/config/runtime_configuration_database_methods.rb
+++ b/lib/pact_broker/config/runtime_configuration_database_methods.rb
@@ -31,6 +31,11 @@ def self.included(anyway_config)
             database_connection_validation_timeout: nil
           )
 
+          coerce_types(
+            database_username: :string,
+            database_password: :string
+          )
+
           def database_configuration
             database_credentials
               .merge(