diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index eb7b284b656..6cca3a80720 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -19,16 +19,20 @@ jobs:
             - uses: actions/setup-node@v1
               with:
                   node-version: 12
+
             - uses: actions/checkout@v2
+
             - uses: actions/cache@v2
               id: cache-deps
               with:
                   path: |
                       node_modules
                       */*/node_modules
-                  key: 2-${{ runner.os }}-node12-${{ hashFiles('**/package-lock.json') }}
-            - run: bash ./scripts/install.sh
+                  key: ${{ runner.os }}-node12-${{ hashFiles('**/package-lock.json') }}
+
+            - run: npm ci
               if: steps.cache-deps.outputs.cache-hit != 'true'
+
             - run: bash ./scripts/ci.sh
     unit:
         runs-on: ubuntu-latest
@@ -41,16 +45,20 @@ jobs:
             - uses: actions/setup-node@v1
               with:
                   node-version: ${{ matrix.node }}
+
             - uses: actions/checkout@v2
+
             - uses: actions/cache@v2
               id: cache-deps
               with:
                   path: |
                       node_modules
                       */*/node_modules
-                  key: 2-${{ runner.os }}-node${{ matrix.node }}-${{ hashFiles('**/package-lock.json') }}
-            - run: bash ./scripts/install.sh
+                  key: ${{ runner.os }}-node${{ matrix.node }}-${{ hashFiles('**/package-lock.json') }}
+
+            - run: npm ci
               if: steps.cache-deps.outputs.cache-hit != 'true'
+
             - run: bash ./scripts/ci.sh
     e2e:
         runs-on: ubuntu-latest
@@ -59,11 +67,11 @@ jobs:
             matrix:
                 testCmd:
                     [
-                        "unit_and_e2e_clients",
-                        "e2e_ganache",
-                        "e2e_mosaic",
-                        "e2e_browsers",
-                        "e2e_gnosis_dex",
+                        'unit_and_e2e_clients',
+                        'e2e_browsers',
+                        'e2e_ganache',
+                        'e2e_mosaic',
+                        'e2e_gnosis_dex',
                     ]
         env:
             TEST: ${{ matrix.testCmd }}
@@ -72,16 +80,21 @@ jobs:
               with:
                   node-version: 12
             - uses: actions/checkout@v2
+
             - uses: actions/cache@v2
               id: cache-deps
+              if: env.TEST == 'unit_and_e2e_clients' || env.TEST == 'e2e_browsers'
               with:
                   path: |
                       node_modules
                       */*/node_modules
-                  key: 2-${{ runner.os }}-node12-${{ hashFiles('**/package-lock.json') }}
-            - run: bash ./scripts/install.sh
-              if: steps.cache-deps.outputs.cache-hit != 'true'
+                  key: ${{ runner.os }}-node12-${{ hashFiles('**/package-lock.json') }}
+
+            - run: npm ci
+              if: (env.TEST == 'unit_and_e2e_clients' || env.TEST == 'e2e_browsers') && steps.cache-deps.outputs.cache-hit != 'true'
+
             - run: bash ./scripts/ci.sh
+
             - name: Send coverage reports to Coveralls
               if: env.TEST == 'unit_and_e2e_clients'
               uses: coverallsapp/github-action@master
diff --git a/scripts/ci.sh b/scripts/ci.sh
index b385e1302f2..c8e6555c000 100755
--- a/scripts/ci.sh
+++ b/scripts/ci.sh
@@ -7,20 +7,21 @@
 # Exit immediately on error
 set -o errexit
 
-npm run build
-
 if [ "$TEST" = "unit" ]; then
 
+  npm run build
   npm run test:unit
 
 elif [ "$TEST" = "build_and_lint" ]; then
 
+  npm run build
   npm run dtslint
   npm run depcheck
   npm run bundlesize
 
 elif [ "$TEST" = "unit_and_e2e_clients" ]; then
 
+  npm run build
   npm run test:e2e:ganache
   npm run test:e2e:geth:insta
   npm run test:e2e:geth:auto
@@ -29,6 +30,7 @@ elif [ "$TEST" = "unit_and_e2e_clients" ]; then
 
 elif [ "$TEST" = "e2e_browsers" ]; then
 
+  npm run build
   npm run test:e2e:chrome
   npm run test:e2e:firefox
   npm run test:e2e:min
diff --git a/scripts/e2e.npm.publish.sh b/scripts/e2e.npm.publish.sh
index c2bb9e7b63b..f832655db44 100755
--- a/scripts/e2e.npm.publish.sh
+++ b/scripts/e2e.npm.publish.sh
@@ -23,7 +23,9 @@ fi
 # what it needs here.
 npm install -g verdaccio@4.4.4
 npm install -g npm-auth-to-token@1.0.0
-npm install -g lerna@3.18.3
+npm install -g lerna@^3.20.2
+npm install -g typescript@^3.9.5
+npm install -g webpack@^4.44.1 webpack-cli@^3.3.12 clean-webpack-plugin@^3.0.0
 
 # Launch npm proxy registry and save pid to kill server (req. in Windows env)
 verdaccio --config verdaccio.yml &
@@ -50,7 +52,6 @@ lerna version minor \
   --force-publish=* \
   --no-git-tag-version \
   --no-push \
-  --ignore-scripts \
   --yes
 
 # Set identity prior to publishing (necessary for Windows)
diff --git a/scripts/install.sh b/scripts/install.sh
deleted file mode 100755
index 6f55e78cccd..00000000000
--- a/scripts/install.sh
+++ /dev/null
@@ -1,15 +0,0 @@
-#!/usr/bin/env bash
-
-# This script contains conditional installation logic for CI
-
-# CI jobs we'd like to skip default installation for:
-# Helpful for E2E tests where the dev deps might cause problems
-skip=(
-  "e2e_ganache"
-  "e2e_mosaic"
-  "e2e_windows"
-)
-
-if [[ ! " ${skip[@]} " =~ " ${TEST} " ]]; then
-  npm ci
-fi