diff --git a/package.json b/package.json
index 55f374d..323ce16 100644
--- a/package.json
+++ b/package.json
@@ -54,7 +54,7 @@
     "bluebird-retry": "^0.11.0",
     "dotenv": "^8.1.0",
     "es6-promise-pool": "^2.5.0",
-    "jssha": "^2.1.0",
+    "jssha": "^2.4.2",
     "regenerator-runtime": "^0.13.1",
     "request": "^2.87.0",
     "request-promise": "^4.2.2",
diff --git a/yarn.lock b/yarn.lock
index 10e31e0..14f1244 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2967,10 +2967,10 @@ jsprim@^1.2.2:
     json-schema "0.2.3"
     verror "1.10.0"
 
-jssha@^2.1.0:
-  version "2.4.0"
-  resolved "https://registry.yarnpkg.com/jssha/-/jssha-2.4.0.tgz#99561b53bbf97b99ffb3342a4df3da7a64c0a71a"
-  integrity sha512-MlACL8dJB0SRwqenQzYxhSt/5c/ooIJykbZdP2wj+vhvhzYRAKZYnt8yDY7tXzMz8AZtrS4mS2bTmDdyt0vpBQ==
+jssha@^2.4.2:
+  version "2.4.2"
+  resolved "https://registry.yarnpkg.com/jssha/-/jssha-2.4.2.tgz#d950b095634928bd6b2bda1d42da9a3a762d65e9"
+  integrity sha512-/jsi/9C0S70zfkT/4UlKQa5E1xKurDnXcQizcww9JSR/Fv+uIbWM2btG+bFcL3iNoK9jIGS0ls9HWLr1iw0kFg==
 
 just-extend@^4.0.2:
   version "4.0.2"