diff --git a/package.json b/package.json
index 971b340..0da4f9d 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
     "bitcoinjs-lib": "^3.3.1",
     "bs58": "^4.0.1",
     "coinselect": "^3.1.11",
-    "elliptic": "^6.4.0",
+    "elliptic": "^6.5.3",
     "ethereum-tx-decoder": "^2.0.1",
     "ethereumjs-tx": "^1.3.4",
     "ethereumjs-util": "^5.2.0",
diff --git a/yarn.lock b/yarn.lock
index dfeb76a..90dc007 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -630,9 +630,9 @@ elliptic@6.3.3:
     hash.js "^1.0.0"
     inherits "^2.0.1"
 
-elliptic@^6.0.0, elliptic@^6.2.3, elliptic@^6.4.0:
-  version "6.4.0"
-  resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.4.0.tgz#cac9af8762c85836187003c8dfe193e5e2eae5df"
+elliptic@^6.0.0, elliptic@^6.2.3, elliptic@^6.5.3:
+  version "6.5.3"
+  resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.5.3.tgz#cb59eb2efdaf73a0bd78ccd7015a62ad6e0f93d6"
   dependencies:
     bn.js "^4.4.0"
     brorand "^1.0.1"