diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 4ff005f2..85a71a98 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -1,17 +1,22 @@
 name: Build
 on:
-  push:
-    branches:
-      - main
-      - staging
-  pull_request:
+  pull_request_target:
     branches:
       - main
 jobs:
+  approve:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Approve
+        run: echo For security reasons, all pull requests need to be approved first before running any automated CI.
+
   build:
+    needs: [approve] # Require the first step to finish
     timeout-minutes: 5
     name: Build on Node ${{ matrix.node }} and ${{ matrix.os }}
-
+    environment:
+      name: Preview
     env:
       DATABASE_URL: postgresql://postgres:@localhost:5432/calendso
       NODE_ENV: test
@@ -35,6 +40,9 @@ jobs:
     steps:
       - name: Checkout repo
         uses: actions/checkout@v2
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
+          fetch-depth: 2
 
       - name: Use Node ${{ matrix.node }}
         uses: actions/setup-node@v1
@@ -57,28 +65,3 @@ jobs:
       - run: yarn prisma migrate deploy
       - run: yarn test
       - run: yarn build
-
-  types:
-    name: Check types
-
-    strategy:
-      matrix:
-        node: ["14.x"]
-        os: [ubuntu-latest]
-    runs-on: ${{ matrix.os }}
-
-    steps:
-      - name: Checkout repo
-        uses: actions/checkout@v2
-        with:
-          fetch-depth: 0
-
-      - name: Use Node ${{ matrix.node }}
-        uses: actions/setup-node@v1
-        with:
-          node-version: ${{ matrix.node }}
-
-      - name: Install deps
-        uses: bahmutov/npm-install@v1
-
-      - run: yarn check-changed-files
diff --git a/.github/workflows/check-types.yml b/.github/workflows/check-types.yml
new file mode 100644
index 00000000..bd836031
--- /dev/null
+++ b/.github/workflows/check-types.yml
@@ -0,0 +1,30 @@
+name: Check types
+on:
+  pull_request:
+    branches:
+      - main
+jobs:
+  types:
+    name: Check types
+
+    strategy:
+      matrix:
+        node: ["14.x"]
+        os: [ubuntu-latest]
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Use Node ${{ matrix.node }}
+        uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node }}
+
+      - name: Install deps
+        uses: bahmutov/npm-install@v1
+
+      - run: yarn check-changed-files
diff --git a/.github/workflows/e2e.yml b/.github/workflows/e2e.yml
index b81d773c..bbd77a9f 100644
--- a/.github/workflows/e2e.yml
+++ b/.github/workflows/e2e.yml
@@ -1,17 +1,22 @@
 name: E2E test
 on:
-  push:
-    branches:
-      - main
-      - staging
-  pull_request:
+  pull_request_target:
     branches:
       - main
 jobs:
+  approve:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Approve
+        run: echo For security reasons, all pull requests need to be approved first before running any automated CI.
+
   test:
     timeout-minutes: 10
     name: ${{ matrix.node }} and ${{ matrix.os }}
-
+    needs: [approve] # Require the first step to finish
+    environment:
+      name: Preview
     env:
       DATABASE_URL: postgresql://postgres:@localhost:5432/calendso
       BASE_URL: http://localhost:3000
@@ -52,6 +57,9 @@ jobs:
     steps:
       - name: Checkout repo
         uses: actions/checkout@v2
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
+          fetch-depth: 2
 
       - name: Use Node ${{ matrix.node }}
         uses: actions/setup-node@v1