diff --git a/test/internal/constants.js b/test/internal/constants.js
index 1b72d870..a8f6ab2d 100644
--- a/test/internal/constants.js
+++ b/test/internal/constants.js
@@ -2,8 +2,9 @@ const t = require('tap')
 const constants = require('../../internal/constants')
 
 t.match(constants, {
-  SEMVER_SPEC_VERSION: String,
   MAX_LENGTH: Number,
-  MAX_SAFE_INTEGER: Number,
   MAX_SAFE_COMPONENT_LENGTH: Number,
-}, 'got some numbers exported')
+  MAX_SAFE_INTEGER: Number,
+  RELEASE_TYPES: Array,
+  SEMVER_SPEC_VERSION: String,
+}, 'got appropriate data types exported')