diff --git a/package.json b/package.json
index a6702cab..068bc418 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
   "dependencies": {
     "@babel/polyfill": "7.12.1",
     "@polkadot/api": "2.10.1",
-    "core-js": "3.17.2",
+    "core-js": "3.17.3",
     "deep-object-diff": "1.1.0",
     "edgeware-node-types": "2.3.0",
     "lodash": "4.17.21",
diff --git a/yarn.lock b/yarn.lock
index 1d6c1031..195af814 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -6297,10 +6297,10 @@ core-js-pure@^3.8.2:
   resolved "https://registry.yarnpkg.com/core-js-pure/-/core-js-pure-3.9.1.tgz#677b322267172bd490e4464696f790cbc355bec5"
   integrity sha512-laz3Zx0avrw9a4QEIdmIblnVuJz8W51leY9iLThatCsFawWxC3sE4guASC78JbCin+DkwMpCdp1AVAuzL/GN7A==
 
-core-js@3.17.2:
-  version "3.17.2"
-  resolved "https://registry.yarnpkg.com/core-js/-/core-js-3.17.2.tgz#f960eae710dc62c29cca93d5332e3660e289db10"
-  integrity sha512-XkbXqhcXeMHPRk2ItS+zQYliAMilea2euoMsnpRRdDad6b2VY6CQQcwz1K8AnWesfw4p165RzY0bTnr3UrbYiA==
+core-js@3.17.3:
+  version "3.17.3"
+  resolved "https://registry.yarnpkg.com/core-js/-/core-js-3.17.3.tgz#8e8bd20e91df9951e903cabe91f9af4a0895bc1e"
+  integrity sha512-lyvajs+wd8N1hXfzob1LdOCCHFU4bGMbqqmLn1Q4QlCpDqWPpGf+p0nj+LNrvDDG33j0hZXw2nsvvVpHysxyNw==
 
 core-js@^1.0.0:
   version "1.2.7"