diff --git a/.github/workflows/jobs.yml b/.github/workflows/jobs.yml
new file mode 100644
index 0000000..03cb1e7
--- /dev/null
+++ b/.github/workflows/jobs.yml
@@ -0,0 +1,26 @@
+on:
+  workflow_dispatch:
+
+jobs:
+  job_1:
+    runs-on: ubuntu
+    steps:
+      - run: "echo jobs${{ github.job }}"
+
+  job_2:
+    runs-on: ubuntu-latest
+    needs: job_1
+    steps:
+      - run: "echo ${{ github.job }}"
+
+  job_3:
+    runs-on: ubuntu-latest
+    needs: job_1
+    steps:
+      - run: "echo ${{ github.job }}"
+
+  job_4:
+    runs-on: ubuntu-latest
+    needs: [job_2,job_3]
+    steps:
+      - run: "echo ${{ github.job }}"
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index fddebdb..93bce8b 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -6,7 +6,7 @@ on:
       - main
 jobs:
   example-job:
-    
+    runs-on: ubuntu
     steps:
       - name: print a welcome message
         run: echo "welcome to our first github actions workflow"