diff --git a/package.json b/package.json
index 04f0a33..d2deca2 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
     "lib/**/*.d.ts"
   ],
   "dependencies": {
-    "@salesforce/ts-types": "^1.7.2",
+    "@salesforce/ts-types": "^1.7.3",
     "sinon": "^5.1.1",
     "tslib": "^2.5.0"
   },
diff --git a/yarn.lock b/yarn.lock
index d90ee2c..9564ea3 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -646,12 +646,12 @@
   resolved "https://registry.npmjs.org/@salesforce/prettier-config/-/prettier-config-0.0.2.tgz#ded39bf7cb75238edc9db6dd093649111350f8bc"
   integrity sha512-KExM355BLbxCW6siGBV7oUOotXvvVp0tAWERgzUkM2FcMb9fWrjwXDrIHc8V0UdDlA3UXtFltDWgN+Yqi+BA/g==
 
-"@salesforce/ts-types@^1.7.2":
-  version "1.7.2"
-  resolved "https://registry.npmjs.org/@salesforce/ts-types/-/ts-types-1.7.2.tgz#ab40399d291c7eca57efc9890daf2fa2632197ec"
-  integrity sha512-eCpWKEb03UCKBJ6Svp0Vwcwt+fG6BQbopO4x5wt6CYeT8Rjt0dbDQicZPmVL59j2qyt3Q4Y4EYsxXUGZmdfvDw==
+"@salesforce/ts-types@^1.7.3":
+  version "1.7.3"
+  resolved "https://registry.npmjs.org/@salesforce/ts-types/-/ts-types-1.7.3.tgz#89b79ff0aaa55fea9f2de0afa8e515be3e17d0d8"
+  integrity sha512-jpmekGqZ7tpHRJwf1rF0yBJ/IMC5mOrryNi4HZkKuNQn8RF97WpynmL8Om04mLTCESvCiif3y7NWfIcxtID2Gw==
   dependencies:
-    tslib "^2.4.1"
+    tslib "^2.5.0"
 
 "@sinonjs/commons@^1", "@sinonjs/commons@^1.3.0", "@sinonjs/commons@^1.6.0", "@sinonjs/commons@^1.7.0", "@sinonjs/commons@^1.8.1":
   version "1.8.3"
@@ -4439,7 +4439,7 @@ tslib@^1.8.1, tslib@^1.9.3:
   resolved "https://registry.npmjs.org/tslib/-/tslib-1.14.1.tgz#cf2d38bdc34a134bcaf1091c41f6619e2f672d00"
   integrity sha512-Xni35NKzjgMrwevysHTCArtLDpPvye8zV/0E4EyYn43P7/7qvQwPh9BGkHewbMulVntbigmcT7rdX3BNo9wRJg==
 
-tslib@^2.0.0, tslib@^2.0.3, tslib@^2.4.1, tslib@^2.5.0:
+tslib@^2.0.0, tslib@^2.0.3, tslib@^2.5.0:
   version "2.5.0"
   resolved "https://registry.npmjs.org/tslib/-/tslib-2.5.0.tgz#42bfed86f5787aeb41d031866c8f402429e0fddf"
   integrity sha512-336iVw3rtn2BUK7ORdIAHTyxHGRIHVReokCR3XjbckJMK7ms8FysBfhLR8IXnAgy7T0PTPNBWKiH514FOW/WSg==