diff --git a/DEVELOPERS_GUIDE.md b/DEVELOPERS_GUIDE.md
index 824dccd2..d109e927 100644
--- a/DEVELOPERS_GUIDE.md
+++ b/DEVELOPERS_GUIDE.md
@@ -25,5 +25,5 @@ steps:
       OCTOPUS_URL: ${{ secrets.SERVER }}
       OCTOPUS_SPACE: 'Outer Space'
     with:
-      server_task_id: {{ steps.some_previous_deployment_step.outputs.server_tasks[0].server_task_id }}
+      server_task_id: ${{ fromJson(steps.some_previous_deployment_step.outputs.server_tasks)[0].serverTaskId }}
 ```
diff --git a/README.md b/README.md
index a129bf97..95e3e9fe 100644
--- a/README.md
+++ b/README.md
@@ -31,7 +31,7 @@ steps:
       OCTOPUS_URL: ${{ secrets.SERVER }}
       OCTOPUS_SPACE: 'Outer Space'
     with:
-      server_task_id: {{ steps.some_previous_deployment_step.outputs.server_tasks[0].server_task_id }}
+      server_task_id: ${{ fromJson(steps.some_previous_deployment_step.outputs.server_tasks)[0].serverTaskId }}
 ```
 
 ## ✍️ Environment Variables