diff --git a/yarn.lock b/yarn.lock
index bd382e12..752cd7de 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2083,7 +2083,7 @@ bluebird@^3.1.1, bluebird@^3.5.5:
   resolved "https://registry.npmjs.org/bluebird/-/bluebird-3.7.2.tgz"
   integrity sha512-XpNj6GDQzdfW+r2Wnn7xiSAd7TM3jzkxGXBGTtWKuSXv1xUV+azxAm8jdWZN06QTQk+2N2XB9jRDkvbmQmcRtg==
 
-bn.js@^4.0.0, bn.js@^4.1.0, bn.js@^4.4.0:
+bn.js@^4.0.0, bn.js@^4.1.0:
   version "4.11.9"
   resolved "https://registry.npmjs.org/bn.js/-/bn.js-4.11.9.tgz"
   integrity sha512-E6QoYqCKZfgatHTdHzs1RRKP7ip4vvm+EyRUeE2RF0NblwVvb0p6jSVeNTOFxPn26QXN2o6SMfNxKp6kU8zQaw==
@@ -3784,23 +3784,10 @@ electron-to-chromium@^1.3.585:
   resolved "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.3.586.tgz"
   integrity sha512-or8FCbQCRlPZHkOoqBULOI9hzTiStVIQqDLgAPt8pzY+swTrW+89vsqd24Zn+Iv4guAJLxRBD6OR5AmbpabGDA==
 
-elliptic@^6.5.3:
-  version "6.5.3"
-  resolved "https://registry.npmjs.org/elliptic/-/elliptic-6.5.3.tgz"
-  integrity sha512-IMqzv5wNQf+E6aHeIqATs0tOLeOTwj1QKbRcS3jBbYkl5oLAserA8yJTT7/VyHUYG91PRmPyeQDObKLPpeS4dw==
-  dependencies:
-    bn.js "^4.4.0"
-    brorand "^1.0.1"
-    hash.js "^1.0.0"
-    hmac-drbg "^1.0.0"
-    inherits "^2.0.1"
-    minimalistic-assert "^1.0.0"
-    minimalistic-crypto-utils "^1.0.0"
-
-elliptic@^6.5.4:
-  version "6.5.4"
-  resolved "https://registry.npmjs.org/elliptic/-/elliptic-6.5.4.tgz"
-  integrity sha512-iLhC6ULemrljPZb+QutR5TQGB+pdW6KGD5RSegS+8sorOZT+rdQFbsQFJgvN3eRqNALqJer4oQ16YvJHlU8hzQ==
+elliptic@^6.5.3, elliptic@^6.5.4:
+  version "6.6.0"
+  resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.6.0.tgz#5919ec723286c1edf28685aa89261d4761afa210"
+  integrity sha512-dpwoQcLc/2WLQvJvLRHKZ+f9FgOdjnq11rurqwekGQygGPsYSK29OMMD2WalatiqQ+XGFDglTNixpPfI+lpaAA==
   dependencies:
     bn.js "^4.11.9"
     brorand "^1.1.0"
@@ -5296,7 +5283,7 @@ hirestime@^3.2.1:
   resolved "https://registry.npmjs.org/hirestime/-/hirestime-3.2.2.tgz"
   integrity sha512-X+4w5O6JMW7zlgAhad6OPA/MwYTW1FqrF27+6ItRUmDT4jklsXd4N5S5hNCmd9AIGVp8SLsCoGwRe5ddBp/CKg==
 
-hmac-drbg@^1.0.0, hmac-drbg@^1.0.1:
+hmac-drbg@^1.0.1:
   version "1.0.1"
   resolved "https://registry.npmjs.org/hmac-drbg/-/hmac-drbg-1.0.1.tgz"
   integrity sha1-0nRXAQJabHdabFRXk+1QL8DGSaE=
@@ -6914,7 +6901,7 @@ minimalistic-assert@^1.0.0, minimalistic-assert@^1.0.1:
   resolved "https://registry.npmjs.org/minimalistic-assert/-/minimalistic-assert-1.0.1.tgz"
   integrity sha512-UtJcAD4yEaGtjPezWuO9wC4nwUnVH/8/Im3yEHQP4b67cXlD/Qr9hdITCU1xDbSEXg2XKNaP8jsReV7vQd00/A==
 
-minimalistic-crypto-utils@^1.0.0, minimalistic-crypto-utils@^1.0.1:
+minimalistic-crypto-utils@^1.0.1:
   version "1.0.1"
   resolved "https://registry.npmjs.org/minimalistic-crypto-utils/-/minimalistic-crypto-utils-1.0.1.tgz"
   integrity sha1-9sAMHAsIIkblxNmd+4x8CDsrWCo=