diff --git a/.flowconfig b/.flowconfig
index 83b5e3c51b37..d1fd39d90f4f 100644
--- a/.flowconfig
+++ b/.flowconfig
@@ -2,9 +2,9 @@
 .*/build/.*
 
 [include]
-./node_modules/@polkadot/dev/flow-typed
 
 [libs]
+./node_modules/@polkadot/dev/flow-typed
 
 [options]
 esproposal.decorators=ignore
diff --git a/package.json b/package.json
index 874d18ecbe18..3d466b4c0ff0 100644
--- a/package.json
+++ b/package.json
@@ -17,17 +17,17 @@
     "url": "https://github.com/polkadot-js/api/issues"
   },
   "homepage": "https://github.com/polkadot-js/api#readme",
+  "workspaces": [
+    "packages/*"
+  ],
   "scripts": {
-    "build": "yarn polkadot-dev-build-babel",
-    "check": "yarn eslint packages && yarn flow check",
-    "test": "yarn jest --coverage packages"
+    "build": "polkadot-dev-build-babel",
+    "check": "eslint packages && flow check",
+    "test": "jest --coverage packages"
   },
   "devDependencies": {
-    "@polkadot/dev": "^0.9.8",
+    "@polkadot/dev": "^0.9.9",
     "lerna": "^2.5.1"
   },
-  "dependencies": {},
-  "workspaces": [
-    "packages/*"
-  ]
+  "dependencies": {}
 }
diff --git a/packages/api-format/package.json b/packages/api-format/package.json
index 6e61becc8e31..1349659c371f 100644
--- a/packages/api-format/package.json
+++ b/packages/api-format/package.json
@@ -30,11 +30,10 @@
     "test": "echo \"Tests only available from root wrapper\""
   },
   "devDependencies": {
-    "@polkadot/api-jsonrpc": "^0.5.4",
-    "@polkadot/dev": "^0.9.1"
+    "@polkadot/api-jsonrpc": "^0.5.4"
   },
   "dependencies": {
-    "@polkadot/util": "^0.5.15",
+    "@polkadot/util": "^0.5.19",
     "babel-runtime": "^6.26.0"
   }
 }
diff --git a/packages/api-jsonrpc/package.json b/packages/api-jsonrpc/package.json
index 13da2fc4bbf7..5a2b7782ecee 100644
--- a/packages/api-jsonrpc/package.json
+++ b/packages/api-jsonrpc/package.json
@@ -29,9 +29,7 @@
     "check": "eslint src && flow check",
     "test": "echo \"Tests only available from root wrapper\""
   },
-  "devDependencies": {
-    "@polkadot/dev": "^0.9.1"
-  },
+  "devDependencies": {},
   "dependencies": {
     "babel-runtime": "^6.26.0"
   }
diff --git a/packages/api-provider/package.json b/packages/api-provider/package.json
index 343fe6f80d8f..2820314e8e63 100644
--- a/packages/api-provider/package.json
+++ b/packages/api-provider/package.json
@@ -30,12 +30,11 @@
     "test": "echo \"Tests only available from root wrapper\""
   },
   "devDependencies": {
-    "@polkadot/dev": "^0.9.1",
     "mock-socket": "^7.1.0",
     "nock": "^9.1.0"
   },
   "dependencies": {
-    "@polkadot/util": "^0.5.15",
+    "@polkadot/util": "^0.5.19",
     "babel-runtime": "^6.26.0",
     "isomorphic-fetch": "^2.2.1"
   }
diff --git a/packages/api/package.json b/packages/api/package.json
index d3567c835109..a82f5b7ce4a8 100644
--- a/packages/api/package.json
+++ b/packages/api/package.json
@@ -29,14 +29,12 @@
     "check": "eslint src && flow check",
     "test": "echo \"Tests only available from root wrapper\""
   },
-  "devDependencies": {
-    "@polkadot/dev": "^0.9.1"
-  },
+  "devDependencies": {},
   "dependencies": {
     "@polkadot/api-format": "^0.5.4",
     "@polkadot/api-jsonrpc": "^0.5.4",
     "@polkadot/api-provider": "^0.5.4",
-    "@polkadot/util": "^0.5.15",
+    "@polkadot/util": "^0.5.19",
     "babel-runtime": "^6.26.0"
   }
 }