diff --git a/package-lock.json b/package-lock.json
index 6d32441..0c40a60 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1421,9 +1421,9 @@
       "dev": true
     },
     "bn.js": {
-      "version": "4.11.8",
-      "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.8.tgz",
-      "integrity": "sha512-ItfYfPLkWHUjckQCk8xC+LwxgK8NYcXywGigJgSwOP8Y2iyWT4f2vsZnoOXTTbo+o5yXmIUJ4gn5538SO5S3gA=="
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-5.0.0.tgz",
+      "integrity": "sha512-bVwDX8AF+72fIUNuARelKAlQUNtPOfG2fRxorbVvFk4zpHbqLrPdOGfVg5vrKwVzLLePqPBiATaOZNELQzmS0A=="
     },
     "body": {
       "version": "5.1.0",
@@ -3103,7 +3103,8 @@
         "ansi-regex": {
           "version": "2.1.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "aproba": {
           "version": "1.2.0",
@@ -3124,12 +3125,14 @@
         "balanced-match": {
           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "brace-expansion": {
           "version": "1.1.11",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "balanced-match": "1.0.0",
             "concat-map": "0.0.1"
@@ -3144,17 +3147,20 @@
         "code-point-at": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "concat-map": {
           "version": "0.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "console-control-strings": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "core-util-is": {
           "version": "1.0.2",
@@ -3271,7 +3277,8 @@
         "inherits": {
           "version": "2.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "ini": {
           "version": "1.3.5",
@@ -3283,6 +3290,7 @@
           "version": "1.0.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "number-is-nan": "1.0.1"
           }
@@ -3297,6 +3305,7 @@
           "version": "3.0.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "brace-expansion": "1.1.11"
           }
@@ -3304,12 +3313,14 @@
         "minimist": {
           "version": "0.0.8",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "minipass": {
           "version": "2.2.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "safe-buffer": "5.1.1",
             "yallist": "3.0.2"
@@ -3328,6 +3339,7 @@
           "version": "0.5.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "minimist": "0.0.8"
           }
@@ -3408,7 +3420,8 @@
         "number-is-nan": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "object-assign": {
           "version": "4.1.1",
@@ -3420,6 +3433,7 @@
           "version": "1.4.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "wrappy": "1.0.2"
           }
@@ -3505,7 +3519,8 @@
         "safe-buffer": {
           "version": "5.1.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "safer-buffer": {
           "version": "2.1.2",
@@ -3541,6 +3556,7 @@
           "version": "1.0.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "code-point-at": "1.1.0",
             "is-fullwidth-code-point": "1.0.0",
@@ -3560,6 +3576,7 @@
           "version": "3.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "2.1.1"
           }
@@ -3603,12 +3620,14 @@
         "wrappy": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "yallist": {
           "version": "3.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
@@ -4763,22 +4782,12 @@
       }
     },
     "leb128": {
-      "version": "0.0.4",
-      "resolved": "https://registry.npmjs.org/leb128/-/leb128-0.0.4.tgz",
-      "integrity": "sha512-2zejk0fCIgY8RVcc/KzvyfpDio5Oo8HgPZmkrOmdwmbk0KpKpgD+JKwikxKk8cZYkANIhwHK50SNukkCm3XkCQ==",
+      "version": "0.0.5",
+      "resolved": "https://registry.npmjs.org/leb128/-/leb128-0.0.5.tgz",
+      "integrity": "sha512-elbNtfmu3GndZbesVF6+iQAfVjOXW9bM/aax9WwMlABZW+oK9sbAZEXoewaPHmL34sxa8kVwWsru8cNE/yn2gg==",
       "requires": {
-        "bn.js": "4.11.8",
-        "buffer-pipe": "0.0.0"
-      },
-      "dependencies": {
-        "buffer-pipe": {
-          "version": "0.0.0",
-          "resolved": "https://registry.npmjs.org/buffer-pipe/-/buffer-pipe-0.0.0.tgz",
-          "integrity": "sha512-PvKbsvQOH4dcUyUEvQQSs3CIkkuPcOHt3gKnXwf4HsPKFDxSN7bkmICVIWgOmW/jx/fAEGGn4mIayIJPLs7G8g==",
-          "requires": {
-            "safe-buffer": "5.1.1"
-          }
-        }
+        "bn.js": "^5.0.0",
+        "buffer-pipe": "0.0.3"
       }
     },
     "levn": {
@@ -5338,6 +5347,7 @@
           "version": "0.1.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "kind-of": "3.2.2",
             "longest": "1.0.1",
@@ -6280,7 +6290,8 @@
         "longest": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "lru-cache": {
           "version": "4.1.3",
@@ -8360,7 +8371,8 @@
     "safe-buffer": {
       "version": "5.1.1",
       "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.1.tgz",
-      "integrity": "sha512-kKvNJn6Mm93gAczWVJg7wH+wGYWNrDHdWvpUmHyEsgCtIwwo3bqPtV4tR5tuPaUhTOo/kvhVwd8XwwOllGYkbg=="
+      "integrity": "sha512-kKvNJn6Mm93gAczWVJg7wH+wGYWNrDHdWvpUmHyEsgCtIwwo3bqPtV4tR5tuPaUhTOo/kvhVwd8XwwOllGYkbg==",
+      "dev": true
     },
     "safe-json-parse": {
       "version": "1.0.1",
@@ -9617,6 +9629,30 @@
         "safe-buffer": "5.1.2"
       },
       "dependencies": {
+        "bn.js": {
+          "version": "4.11.8",
+          "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.8.tgz",
+          "integrity": "sha512-ItfYfPLkWHUjckQCk8xC+LwxgK8NYcXywGigJgSwOP8Y2iyWT4f2vsZnoOXTTbo+o5yXmIUJ4gn5538SO5S3gA=="
+        },
+        "leb128": {
+          "version": "0.0.4",
+          "resolved": "https://registry.npmjs.org/leb128/-/leb128-0.0.4.tgz",
+          "integrity": "sha512-2zejk0fCIgY8RVcc/KzvyfpDio5Oo8HgPZmkrOmdwmbk0KpKpgD+JKwikxKk8cZYkANIhwHK50SNukkCm3XkCQ==",
+          "requires": {
+            "bn.js": "^4.11.6",
+            "buffer-pipe": "0.0.0"
+          },
+          "dependencies": {
+            "buffer-pipe": {
+              "version": "0.0.0",
+              "resolved": "https://registry.npmjs.org/buffer-pipe/-/buffer-pipe-0.0.0.tgz",
+              "integrity": "sha512-PvKbsvQOH4dcUyUEvQQSs3CIkkuPcOHt3gKnXwf4HsPKFDxSN7bkmICVIWgOmW/jx/fAEGGn4mIayIJPLs7G8g==",
+              "requires": {
+                "safe-buffer": "^5.1.1"
+              }
+            }
+          }
+        },
         "safe-buffer": {
           "version": "5.1.2",
           "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
diff --git a/package.json b/package.json
index 155c81a..95196d7 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
   "license": "MPL-2.0",
   "dependencies": {
     "buffer-pipe": "0.0.3",
-    "leb128": "0.0.4",
+    "leb128": "0.0.5",
     "wasm-json-toolkit": "0.2.6"
   },
   "standard": {