diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9e7b18f..abbd43f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -30,3 +30,12 @@ jobs:
 
     - name: Test
       run: npm test
+
+    - name: Check scripts are executable
+      run: |
+        for i in userTests/*/*.sh; do
+          if ! [[ -x "$i" ]]; then
+            echo "File $i is not executable"
+            exit 1
+          fi
+        done
diff --git a/userTests/angular/build.sh b/userTests/angular/build.sh
index b8ba1ff..49525f5 100755
--- a/userTests/angular/build.sh
+++ b/userTests/angular/build.sh
@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 npm i -g yarn --force
 rm -rf angular
 git clone --depth 1 https://github.com/angular/angular angular
diff --git a/userTests/arktype/build.sh b/userTests/arktype/build.sh
old mode 100644
new mode 100755
index e46cefc..6e55804
--- a/userTests/arktype/build.sh
+++ b/userTests/arktype/build.sh
@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 set -x
 
 npm i -g pnpm
diff --git a/userTests/azure-sdk/build.sh b/userTests/azure-sdk/build.sh
index 8fb2685..90fd215 100755
--- a/userTests/azure-sdk/build.sh
+++ b/userTests/azure-sdk/build.sh
@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 set -x
 npm install -g @microsoft/rush
 rm -rf azure-sdk
diff --git a/userTests/chrome-devtools-frontend-next/build.sh b/userTests/chrome-devtools-frontend-next/build.sh
index 63b14e5..5839627 100755
--- a/userTests/chrome-devtools-frontend-next/build.sh
+++ b/userTests/chrome-devtools-frontend-next/build.sh
@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 rm -rf depot_tools
 git clone --depth 1 https://chromium.googlesource.com/chromium/tools/depot_tools.git depot_tools
 PATH=depot_tools:$PATH
diff --git a/userTests/office-ui-fabric/build.sh b/userTests/office-ui-fabric/build.sh
index 88d435d..7b913a0 100755
--- a/userTests/office-ui-fabric/build.sh
+++ b/userTests/office-ui-fabric/build.sh
@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 npm i -g yarn
 rm -rf office-ui-fabric
 CI=true
diff --git a/userTests/prettier/build.sh b/userTests/prettier/build.sh
index 585c72e..98e5272 100755
--- a/userTests/prettier/build.sh
+++ b/userTests/prettier/build.sh
@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 npm i -g yarn
 rm -rf prettier
 git clone --depth 1 https://github.com/prettier/prettier.git prettier
diff --git a/userTests/pyright/build.sh b/userTests/pyright/build.sh
index 95fcead..75569de 100755
--- a/userTests/pyright/build.sh
+++ b/userTests/pyright/build.sh
@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 rm -rf pyright
 git clone --depth 1 https://github.com/microsoft/pyright.git pyright
 START=$(pwd)
diff --git a/userTests/rxjs-src/build.sh b/userTests/rxjs-src/build.sh
index d095cb6..c0b25b3 100755
--- a/userTests/rxjs-src/build.sh
+++ b/userTests/rxjs-src/build.sh
@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 rm -rf rxjs
 git clone --depth 1 https://github.com/ReactiveX/rxjs rxjs
 START=$(pwd)
diff --git a/userTests/typescript-eslint/build.sh b/userTests/typescript-eslint/build.sh
index 1f7456a..15dc553 100755
--- a/userTests/typescript-eslint/build.sh
+++ b/userTests/typescript-eslint/build.sh
@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 set -x
 
 npm i -g yarn
diff --git a/userTests/vscode/build.sh b/userTests/vscode/build.sh
index 4d1388e..e192246 100755
--- a/userTests/vscode/build.sh
+++ b/userTests/vscode/build.sh
@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 rm -rf vscode
 git clone --depth 1 https://github.com/microsoft/vscode.git vscode
 START=$(pwd)
diff --git a/userTests/vue-next/build.sh b/userTests/vue-next/build.sh
index eb6686c..f6a5cba 100755
--- a/userTests/vue-next/build.sh
+++ b/userTests/vue-next/build.sh
@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 npm install -g pnpm
 rm -rf vue-next
 git clone --depth 1 https://github.com/vuejs/core