diff --git a/.npmignore b/.npmignore
index 3bbae7404..d18d88d36 100644
--- a/.npmignore
+++ b/.npmignore
@@ -12,4 +12,5 @@ esdoc.json
 gulpfile.babel.js
 runTests.sh
 runTests.ps1
+buildDependencies.sh
 node_modules/
diff --git a/bolt-connection/package.json b/bolt-connection/package.json
index d8425aa4f..0524ef7c7 100644
--- a/bolt-connection/package.json
+++ b/bolt-connection/package.json
@@ -1,6 +1,6 @@
 {
   "name": "neo4j-driver-bolt-connection",
-  "version": "4.3.0",
+  "version": "4.3.0-dev",
   "description": "Implements the connection with the Neo4j Database using the Bolt Protocol",
   "main": "lib/index.js",
   "types": "types/index.d.ts",
diff --git a/buildDependencies.sh b/buildDependencies.sh
new file mode 100755
index 000000000..8279c75b2
--- /dev/null
+++ b/buildDependencies.sh
@@ -0,0 +1,6 @@
+#!/bin/bash
+
+npm --prefix core ci
+npm --prefix core run build
+npm --prefix bolt-connection ci
+npm --prefix bolt-connection run build
diff --git a/core/package.json b/core/package.json
index c1222eaf1..daedb80ee 100644
--- a/core/package.json
+++ b/core/package.json
@@ -1,6 +1,6 @@
 {
   "name": "neo4j-driver-core",
-  "version": "4.3.0",
+  "version": "4.3.0-dev",
   "description": "Internals of neo4j-driver",
   "main": "lib/index.js",
   "types": "types/index.d.ts",
diff --git a/neo4j-driver-lite/package.json b/neo4j-driver-lite/package.json
index 28325e898..d52738632 100644
--- a/neo4j-driver-lite/package.json
+++ b/neo4j-driver-lite/package.json
@@ -1,6 +1,6 @@
 {
   "name": "neo4j-driver-lite",
-  "version": "4.3.0",
+  "version": "4.3.0-dev",
   "description": "Connect to Neo4j 3.5.0 and up from JavaScript",
   "main": "lib/index.js",
   "types": "types/index.d.ts",
diff --git a/package.json b/package.json
index 8a03e2973..419638db7 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "neo4j-driver",
-  "version": "4.0.0-dev",
-  "description": "Connect to Neo4j 3.4.0 and up from JavaScript",
+  "version": "4.3.0-dev",
+  "description": "Connect to Neo4j 3.5.0 and up from JavaScript",
   "author": "Neo4j",
   "license": "Apache-2.0",
   "repository": {
@@ -20,8 +20,7 @@
     "predocs": "cd core && npm run docs",
     "docs": "esdoc -c esdoc.json",
     "versionRelease": "gulp set --x $VERSION && npm version $VERSION --no-git-tag-version",
-    "browser": "gulp browser && gulp test-browser",
-    "prepack": "cd core && npm pack && cd .. && npm i ./core/neo4j-driver-core-4.3.0.tgz && cd bolt-connection && npm pack && cd .. && npm i ./bolt-connection/neo4j-driver-bolt-connection-4.3.0.tgz"
+    "browser": "gulp browser && gulp test-browser"
   },
   "husky": {
     "hooks": {
diff --git a/runTests.sh b/runTests.sh
index e3bb4a813..c73fb27ea 100755
--- a/runTests.sh
+++ b/runTests.sh
@@ -7,10 +7,7 @@ trap finish EXIT
 
 npm install -g gulp typescript jest
 
-npm --prefix ./core/ ci
-npm --prefix ./core/ run build
-npm --prefix ./bolt-connection/ ci
-npm --prefix ./bolt-connection/ run build
+./buildDependencies.sh
 
 npm ci