diff --git a/package.json b/package.json
index 6642ee442c..b476e99b69 100644
--- a/package.json
+++ b/package.json
@@ -10,10 +10,10 @@
     "packages/*"
   ],
   "resolutions": {
-    "@polkadot/api": "^0.90.0-beta.62",
-    "@polkadot/api-contract": "^0.90.0-beta.62",
+    "@polkadot/api": "^0.90.0-beta.64",
+    "@polkadot/api-contract": "^0.90.0-beta.64",
     "@polkadot/keyring": "^1.1.1",
-    "@polkadot/types": "^0.90.0-beta.62",
+    "@polkadot/types": "^0.90.0-beta.64",
     "@polkadot/util": "^1.1.1",
     "@polkadot/util-crypto": "^1.1.1",
     "@types/styled-components": "4.1.8",
diff --git a/packages/app-contracts/package.json b/packages/app-contracts/package.json
index 01268566a2..f4fe4ddd56 100644
--- a/packages/app-contracts/package.json
+++ b/packages/app-contracts/package.json
@@ -11,7 +11,7 @@
   "license": "Apache-2.0",
   "dependencies": {
     "@babel/runtime": "^7.5.5",
-    "@polkadot/api-contract": "^0.90.0-beta.62",
+    "@polkadot/api-contract": "^0.90.0-beta.64",
     "@polkadot/react-components": "^0.34.0-beta.130"
   }
 }
diff --git a/packages/react-api/package.json b/packages/react-api/package.json
index c67c168720..380490b776 100644
--- a/packages/react-api/package.json
+++ b/packages/react-api/package.json
@@ -31,7 +31,7 @@
   "homepage": "https://github.com/polkadot-js/ui/tree/master/packages/ui-reactive#readme",
   "dependencies": {
     "@babel/runtime": "^7.5.5",
-    "@polkadot/api": "^0.90.0-beta.62",
+    "@polkadot/api": "^0.90.0-beta.64",
     "@polkadot/extension-dapp": "^0.7.0-beta.1",
     "rxjs-compat": "^6.4.0"
   }
diff --git a/packages/react-api/src/with/call.tsx b/packages/react-api/src/with/call.tsx
index d6598e75de..8df89cfb69 100644
--- a/packages/react-api/src/with/call.tsx
+++ b/packages/react-api/src/with/call.tsx
@@ -183,7 +183,7 @@ export default function withCall<P extends ApiProps> (
         if (area === 'query' && meta && meta.type.isMap) {
           const arg = newParams[0];
 
-          assert((!isUndefined(arg) && !isNull(arg)) || meta.type.asMap.isLinked, `${meta.name} expects one argument`);
+          assert((!isUndefined(arg) && !isNull(arg)) || meta.type.asMap.linked.isTrue, `${meta.name} expects one argument`);
         }
 
         return [
diff --git a/yarn.lock b/yarn.lock
index f93feb02a9..25015601c4 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1931,44 +1931,44 @@
     universal-user-agent "^3.0.0"
     url-template "^2.0.8"
 
-"@polkadot/api-contract@^0.90.0-beta.62":
-  version "0.90.0-beta.62"
-  resolved "https://registry.yarnpkg.com/@polkadot/api-contract/-/api-contract-0.90.0-beta.62.tgz#b1662c90c2b162119f11e8416e6725419cb1bd2d"
-  integrity sha512-DadF7uSwg77ETc7Nwf73pWPYKy2QZMsHdosxzuQbhxOhEDTXHnBbvSvyHPUfuckgyI/ua+Z9OtES9nqzoSsGCg==
+"@polkadot/api-contract@^0.90.0-beta.64":
+  version "0.90.0-beta.64"
+  resolved "https://registry.yarnpkg.com/@polkadot/api-contract/-/api-contract-0.90.0-beta.64.tgz#e4fa6354bdd77bbbe363422789c2f3ace32912b0"
+  integrity sha512-wqaFiI1mwggi4Ft48NOL+chJzhaxnXcQ8U92TbFq15U0DiAzueaNb87VtcVTT0fEW3IcWMfk0Q82D3QGLxpVWA==
   dependencies:
     "@babel/runtime" "^7.5.5"
-    "@polkadot/types" "^0.90.0-beta.62"
+    "@polkadot/types" "^0.90.0-beta.64"
 
-"@polkadot/api-derive@^0.90.0-beta.62":
-  version "0.90.0-beta.62"
-  resolved "https://registry.yarnpkg.com/@polkadot/api-derive/-/api-derive-0.90.0-beta.62.tgz#6836f4d6c3ac05be1efa79c716bbf0775c7086ec"
-  integrity sha512-tCpCGGA2WDwOaq60yvgarTmc3nYO+touKQcgR9GB/gZIRwBDfqL1UEsXuY58UZUcVJ+zjj039/tLsiccdb6eWg==
+"@polkadot/api-derive@^0.90.0-beta.64":
+  version "0.90.0-beta.64"
+  resolved "https://registry.yarnpkg.com/@polkadot/api-derive/-/api-derive-0.90.0-beta.64.tgz#52e905354d7ceeb5e114740dc5c789f7a70f117e"
+  integrity sha512-EUfYtuLPTE9gVCTw0QgJ5fVCPmeWBEoLVXIxg2mZfE5c8KVdBWERcRVMP3cDYKEGwc8Oqeeubq1SDOQ/IfE9LQ==
   dependencies:
     "@babel/runtime" "^7.5.5"
-    "@polkadot/api" "^0.90.0-beta.62"
-    "@polkadot/types" "^0.90.0-beta.62"
+    "@polkadot/api" "^0.90.0-beta.64"
+    "@polkadot/types" "^0.90.0-beta.64"
 
-"@polkadot/api-metadata@^0.90.0-beta.62":
-  version "0.90.0-beta.62"
-  resolved "https://registry.yarnpkg.com/@polkadot/api-metadata/-/api-metadata-0.90.0-beta.62.tgz#a55f7a228af192119ee0266ad1bd2bad09099dbe"
-  integrity sha512-qQ1AKB1mOY0DYy8Ec7oMMgvSClrmrxvsg44d9ym3ElMK0Q5N6KpS3fMD2PxgXR5BBNr4QS8vQD7n09Q5aJBppA==
+"@polkadot/api-metadata@^0.90.0-beta.64":
+  version "0.90.0-beta.64"
+  resolved "https://registry.yarnpkg.com/@polkadot/api-metadata/-/api-metadata-0.90.0-beta.64.tgz#257165b0a5febacfec65e2e8283c5e8d63d1f009"
+  integrity sha512-EOoJP55JgshRqHCu0LETvc5klJqzrjGqY1otSSO8xRq4ZusMi6KS8u/tgU5G/TxIQOaBcKUYoUE/epc7glN0kw==
   dependencies:
     "@babel/runtime" "^7.5.5"
-    "@polkadot/types" "^0.90.0-beta.62"
+    "@polkadot/types" "^0.90.0-beta.64"
     "@polkadot/util" "^1.1.1"
     "@polkadot/util-crypto" "^1.1.1"
 
-"@polkadot/api@^0.90.0-beta.62":
-  version "0.90.0-beta.62"
-  resolved "https://registry.yarnpkg.com/@polkadot/api/-/api-0.90.0-beta.62.tgz#17c89163b2196ff4ece22339e8a4f2dcffc81cf0"
-  integrity sha512-V2rBWuRIaeSWGJ5Z2sJ7rb9gMy0owWHAI9/sWRObrThmlDOVy7SKUkYWR37aE70vNR1mQd24qLZoawi2JNjreg==
+"@polkadot/api@^0.90.0-beta.64":
+  version "0.90.0-beta.64"
+  resolved "https://registry.yarnpkg.com/@polkadot/api/-/api-0.90.0-beta.64.tgz#e7df5c3f1f70c2386ded8c144a89f7e8b245aa21"
+  integrity sha512-Oijm9abM+nPJ8fcn5TUCPU4VDS02+L7t4ScI0bjrQ8/MKkI8WOTfiO8ENZjZkI+IYv6oUML5qdEqsDMgbIAsig==
   dependencies:
     "@babel/runtime" "^7.5.5"
-    "@polkadot/api-derive" "^0.90.0-beta.62"
-    "@polkadot/api-metadata" "^0.90.0-beta.62"
-    "@polkadot/rpc-core" "^0.90.0-beta.62"
-    "@polkadot/rpc-provider" "^0.90.0-beta.62"
-    "@polkadot/types" "^0.90.0-beta.62"
+    "@polkadot/api-derive" "^0.90.0-beta.64"
+    "@polkadot/api-metadata" "^0.90.0-beta.64"
+    "@polkadot/rpc-core" "^0.90.0-beta.64"
+    "@polkadot/rpc-provider" "^0.90.0-beta.64"
+    "@polkadot/types" "^0.90.0-beta.64"
     "@polkadot/util-crypto" "^1.1.1"
 
 "@polkadot/dev-react@^0.31.0-beta.3":
@@ -2071,10 +2071,10 @@
   dependencies:
     "@babel/runtime" "^7.5.5"
 
-"@polkadot/jsonrpc@^0.90.0-beta.62":
-  version "0.90.0-beta.62"
-  resolved "https://registry.yarnpkg.com/@polkadot/jsonrpc/-/jsonrpc-0.90.0-beta.62.tgz#1fab0563a8f28d0021d87e18f5fd5eedf7bed525"
-  integrity sha512-vbw6fozYovsf/OGotA0q4vb8XCiZP9WUX1tGoeIYC6T4udS4AIBIXxhvbkkq2ciC2+g8RGGb9Ci20AbfPTY/zg==
+"@polkadot/jsonrpc@^0.90.0-beta.64":
+  version "0.90.0-beta.64"
+  resolved "https://registry.yarnpkg.com/@polkadot/jsonrpc/-/jsonrpc-0.90.0-beta.64.tgz#82248fe6f38cfb9e15e379418304902726bf89ff"
+  integrity sha512-P4fUV8wFQ0DqKCwMupLgnbU+4KimtA6vdIHLo8UMoKWIAh8KJm9DmlmkQrnFDxXqoRwC/zjM9Z0rxrYfz7DVPQ==
   dependencies:
     "@babel/runtime" "^7.5.5"
 
@@ -2102,25 +2102,25 @@
     react-copy-to-clipboard "^5.0.1"
     styled-components "^4.3.1"
 
-"@polkadot/rpc-core@^0.90.0-beta.62":
-  version "0.90.0-beta.62"
-  resolved "https://registry.yarnpkg.com/@polkadot/rpc-core/-/rpc-core-0.90.0-beta.62.tgz#50dcb79df691260fd19ed8a12b702a1a6d78f1dc"
-  integrity sha512-2ygcz+hqa4Cd8Li074o+PfoH82DPtQN95qC5prQSxoxx2lfjoWK8KH6vMJgQzWYPwfwKEniHDpYuglcaSKUuJA==
+"@polkadot/rpc-core@^0.90.0-beta.64":
+  version "0.90.0-beta.64"
+  resolved "https://registry.yarnpkg.com/@polkadot/rpc-core/-/rpc-core-0.90.0-beta.64.tgz#3a937a5c450399441e96cc57865308b2733c7ceb"
+  integrity sha512-wCUjM/dHbLZx4JLb9P2bsTC3vILiS+1hAeQ4RZQ1q6V4G6KCt+Ksyj0YvJgQLxReYLArTjkGoLtijWDwLIrk/w==
   dependencies:
     "@babel/runtime" "^7.5.5"
-    "@polkadot/jsonrpc" "^0.90.0-beta.62"
-    "@polkadot/rpc-provider" "^0.90.0-beta.62"
-    "@polkadot/types" "^0.90.0-beta.62"
+    "@polkadot/jsonrpc" "^0.90.0-beta.64"
+    "@polkadot/rpc-provider" "^0.90.0-beta.64"
+    "@polkadot/types" "^0.90.0-beta.64"
     "@polkadot/util" "^1.1.1"
     rxjs "^6.5.2"
 
-"@polkadot/rpc-provider@^0.90.0-beta.62":
-  version "0.90.0-beta.62"
-  resolved "https://registry.yarnpkg.com/@polkadot/rpc-provider/-/rpc-provider-0.90.0-beta.62.tgz#ac6e02976133d721e5829e7837e452514f5a8458"
-  integrity sha512-UojV/qGMLmo1eX69DD3gwa4L8DPELNfzxInyXbAd9VSXnU3uelYsWsIhmKWVRNKMjXvS33da1dOdUTLQEhz3gA==
+"@polkadot/rpc-provider@^0.90.0-beta.64":
+  version "0.90.0-beta.64"
+  resolved "https://registry.yarnpkg.com/@polkadot/rpc-provider/-/rpc-provider-0.90.0-beta.64.tgz#716c821c48c43880d1dbcbfc721bc2a595663293"
+  integrity sha512-3Gq7cFiVjkIuDs9eGlC1u6CuAS9mV3Z/N4RYeNLiU2YMdvmZ8M3W0VLld5ZlwdcNtiX4mdOAFNhgynPTj0yFFQ==
   dependencies:
     "@babel/runtime" "^7.5.5"
-    "@polkadot/api-metadata" "^0.90.0-beta.62"
+    "@polkadot/api-metadata" "^0.90.0-beta.64"
     "@polkadot/util" "^1.1.1"
     "@polkadot/util-crypto" "^1.1.1"
     "@types/nock" "^10.0.3"
@@ -2135,10 +2135,10 @@
   dependencies:
     "@types/chrome" "^0.0.86"
 
-"@polkadot/types@^0.90.0-beta.62":
-  version "0.90.0-beta.62"
-  resolved "https://registry.yarnpkg.com/@polkadot/types/-/types-0.90.0-beta.62.tgz#c7f7cffe3dfe4fe21e5d954809e4524c014e312f"
-  integrity sha512-CTIcPVpS9s7VnoC/KZM/zv+3OpOjS3ch27hYl9/cg+FwOhpEC4+0pIJH9vuC7/l0S3r9XqSGJoa8S5K3htnr7Q==
+"@polkadot/types@^0.90.0-beta.64":
+  version "0.90.0-beta.64"
+  resolved "https://registry.yarnpkg.com/@polkadot/types/-/types-0.90.0-beta.64.tgz#4604e2173835c692cd4f99f9d173cf4c5809049b"
+  integrity sha512-U5+Sw1bFoIwVA/NpMjGaVBjJHecwTLmgdlKtGK1zNPuNI29ONMgk4t36uKIwMeByAeCj76TTFLOo7IVD+Zd8TA==
   dependencies:
     "@babel/runtime" "^7.5.5"
     "@polkadot/util" "^1.1.1"