diff --git a/packages/oo7-substrate/package.json b/packages/oo7-substrate/package.json
index bd24eba..5b34805 100644
--- a/packages/oo7-substrate/package.json
+++ b/packages/oo7-substrate/package.json
@@ -41,7 +41,7 @@
     "text-encoding": "^0.7.0",
     "text-encoding-polyfill": "^0.6.7",
     "tweetnacl": "^1.0.0",
-    "ws": "^6.1.2",
+    "ws": "^7.0.1",
     "xxhashjs": "^0.2.2"
   },
   "devDependencies": {
diff --git a/packages/oo7-substrate/yarn.lock b/packages/oo7-substrate/yarn.lock
index 4a36e9e..0cb6a23 100644
--- a/packages/oo7-substrate/yarn.lock
+++ b/packages/oo7-substrate/yarn.lock
@@ -68,7 +68,7 @@ assertion-error@^1.1.0:
   resolved "https://registry.yarnpkg.com/assertion-error/-/assertion-error-1.1.0.tgz#e60b6b0e8f301bd97e5375215bda406c85118c0b"
   integrity sha512-jgsaNduz+ndvGyFt3uSuWqvy4lCnIJiovtouQN5JZHOKCS2QuhEdbcQHFhVksz2N2U9hXJo8odG7ETyWlEeuDw==
 
-async-limiter@~1.0.0:
+async-limiter@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/async-limiter/-/async-limiter-1.0.0.tgz#78faed8c3d074ab81f22b4e985d79e8738f720f8"
   integrity sha512-jp/uFnooOiO+L211eZOoSyzpOITMXx1rBITauYykG3BRYPu8h0UcxsPNB04RR5vo4Tyz3+ay17tR6JVf9qzYWg==
@@ -522,10 +522,10 @@ once@^1.3.0:
   dependencies:
     wrappy "1"
 
-oo7@^0.7.10:
-  version "0.7.10"
-  resolved "https://registry.yarnpkg.com/oo7/-/oo7-0.7.10.tgz#5ecc2b76f04f585679ffe13f1e3ab527389b700c"
-  integrity sha512-jUCFP0gxyjDyjuxd6/CfuY7tQ63dKJNWdO/V8hjyAAXUHPGNL2CmMJOa/2TysR+E/L7Ha8UXZ6xUiOunbrejSw==
+oo7@^0.7.12:
+  version "0.7.12"
+  resolved "https://registry.yarnpkg.com/oo7/-/oo7-0.7.12.tgz#bd7a01ba4e815c1fcde9bea2a9a8226d06ec781e"
+  integrity sha512-nVmxwLIiVCY4Aid6/+p2ujJ2mj3yh15zQ3xSl3UPui7U37DJJfD0KmuMjp+XOWH1HxTkKhIKDgR34eEhFHNxgA==
 
 param-case@^2.1.0:
   version "2.1.1"
@@ -708,12 +708,12 @@ wrappy@1:
   resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz#b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"
   integrity sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=
 
-ws@^6.1.2:
-  version "6.2.0"
-  resolved "https://registry.yarnpkg.com/ws/-/ws-6.2.0.tgz#13806d9913b2a5f3cbb9ba47b563c002cbc7c526"
-  integrity sha512-deZYUNlt2O4buFCa3t5bKLf8A7FPP/TVjwOeVNpw818Ma5nk4MLXls2eoEGS39o8119QIYxTrTDoPQ5B/gTD6w==
+ws@^7.0.1:
+  version "7.0.1"
+  resolved "https://registry.yarnpkg.com/ws/-/ws-7.0.1.tgz#1a04e86cc3a57c03783f4910fdb090cf31b8e165"
+  integrity sha512-ILHfMbuqLJvnSgYXLgy4kMntroJpe8hT41dOVWM8bxRuw6TK4mgMp9VJUNsZTEc5Bh+Mbs0DJT4M0N+wBG9l9A==
   dependencies:
-    async-limiter "~1.0.0"
+    async-limiter "^1.0.0"
 
 xxhashjs@^0.2.2:
   version "0.2.2"