diff --git a/.github/workflows/test_e2e.yml b/.github/workflows/test_e2e.yml
index 2056aefdb..f1aa02c48 100644
--- a/.github/workflows/test_e2e.yml
+++ b/.github/workflows/test_e2e.yml
@@ -123,13 +123,16 @@ jobs:
       - name: install bun 
         uses: oven-sh/setup-bun@v2
 
+      - name: install turbo 
+        run: bun install --global --no-save turbo@2.5.0
+
       - name: Boot up test system | docker-compose mariadb mailserver
         run: docker compose -f docker-compose.yml -f docker-compose.test.yml up --detach mariadb mailserver
       
       - name: Prepare test system
         run: |
           sudo chown runner:docker -R *
-          bun install
+          bun install --frozen-lockfile
           sudo cp ./nginx/e2e-test.conf /etc/nginx/sites-available/default
 
       - name: copy test config 
@@ -142,8 +145,8 @@ jobs:
       
       - name: Boot up test system | seed backend
         run: |
-          bun turbo backend#build
-          bun turbo seed
+          turbo backend#build
+          turbo seed
 
       - name: Moving logs after seeding
         run: |
@@ -152,8 +155,8 @@ jobs:
 
       - name: Boot up test system | docker-compose backend, frontend
         run: |
-          bun turbo backend#build frontend#build --env-mode=loose
-          bun turbo backend#start frontend#start --env-mode=loose & 
+          turbo backend#build frontend#build --env-mode=loose
+          turbo backend#start frontend#start --env-mode=loose & 
         
       - name: End-to-end tests | prepare
         run: |