diff --git a/libs/combined/package-lock.json b/libs/combined/package-lock.json
index a63afec..44bbbb8 100644
--- a/libs/combined/package-lock.json
+++ b/libs/combined/package-lock.json
@@ -8,7 +8,7 @@
       "name": "bip39-tool-external-libs",
       "version": "0.4.0",
       "dependencies": {
-        "base-x": "3.0.7",
+        "base-x": "^3.0.11",
         "bchaddrjs": "0.4.4",
         "bchaddrjs-slp": "git://github.com/simpleledger/bchaddrjs.git#af16e44a6bfbe4b3980a62dba50e2f68ed864c6b",
         "bech32": "1.1.4",
@@ -274,9 +274,10 @@
       "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c="
     },
     "node_modules/base-x": {
-      "version": "3.0.7",
-      "resolved": "https://registry.npmjs.org/base-x/-/base-x-3.0.7.tgz",
-      "integrity": "sha512-zAKJGuQPihXW22fkrfOclUUZXM2g92z5GzlSMHxhO6r6Qj+Nm0ccaGNBzDZojzwOMkpjAv4J0fOv1U4go+a4iw==",
+      "version": "3.0.11",
+      "resolved": "https://registry.npmjs.org/base-x/-/base-x-3.0.11.tgz",
+      "integrity": "sha512-xz7wQ8xDhdyP7tQxwdteLYeFfS68tSMNCZ/Y37WJ4bhGfKPpqEIlmIyueQHqOyoPhE6xNUqjzRr8ra0eF9VRvA==",
+      "license": "MIT",
       "dependencies": {
         "safe-buffer": "^5.0.1"
       }
@@ -2459,7 +2460,6 @@
         "base32.js": "~0.1.0",
         "bignumber.js": "^4.0.0",
         "crc": "3.5.0",
-        "ed25519": "0.0.4",
         "js-xdr": "^1.0.5",
         "lodash": "^4.17.10",
         "sha.js": "^2.3.6",
@@ -3060,9 +3060,9 @@
       "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c="
     },
     "base-x": {
-      "version": "3.0.7",
-      "resolved": "https://registry.npmjs.org/base-x/-/base-x-3.0.7.tgz",
-      "integrity": "sha512-zAKJGuQPihXW22fkrfOclUUZXM2g92z5GzlSMHxhO6r6Qj+Nm0ccaGNBzDZojzwOMkpjAv4J0fOv1U4go+a4iw==",
+      "version": "3.0.11",
+      "resolved": "https://registry.npmjs.org/base-x/-/base-x-3.0.11.tgz",
+      "integrity": "sha512-xz7wQ8xDhdyP7tQxwdteLYeFfS68tSMNCZ/Y37WJ4bhGfKPpqEIlmIyueQHqOyoPhE6xNUqjzRr8ra0eF9VRvA==",
       "requires": {
         "safe-buffer": "^5.0.1"
       }
diff --git a/libs/combined/package.json b/libs/combined/package.json
index ed60059..b2c608e 100644
--- a/libs/combined/package.json
+++ b/libs/combined/package.json
@@ -5,7 +5,7 @@
     "build": "browserify index.js --standalone libs | uglifyjs -c > ../../src/js/bip39-libs.js"
   },
   "dependencies": {
-    "base-x": "3.0.7",
+    "base-x": "3.0.11",
     "bchaddrjs": "0.4.4",
     "bchaddrjs-slp": "git://github.com/simpleledger/bchaddrjs.git#af16e44a6bfbe4b3980a62dba50e2f68ed864c6b",
     "bech32": "1.1.4",