diff --git a/README.md b/README.md
index 2608f81..1d86d39 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,7 @@ Marks a deployment status for GitHub actions.
 - `state`: Deployment state. (default: pending)
 - `description`: Descriptive message about the deployment state.
 - `log-url`: Log url location.
+- `deployment-id`: Optional deployment ID to provide, if this action was triggered outside of a `deployment` event.
 - `token`: Github repository token.
 - `environment`: Name for the target deployment environment, which can be changed when setting a deploy status.
 - `environment-url`: URL for accessing your environment.
diff --git a/action.yml b/action.yml
index 7e6f38a..4a776e4 100644
--- a/action.yml
+++ b/action.yml
@@ -9,6 +9,8 @@ inputs:
     description: 'Github repository token'
   log-url:
     description: 'Log url location'
+  deployment-id:
+    description: 'Optional deployment ID to provide, if this action was triggered outside of a `deployment` event.'
   description:
     description: 'Descriptive message about the deployment state'
   environment:
diff --git a/index.js b/index.js
index 256abc7..010698e 100644
--- a/index.js
+++ b/index.js
@@ -9,6 +9,7 @@ async function run() {
     const token = core.getInput("token", {required: true});
     const state = core.getInput("state", {required: true});
     const url = core.getInput("log-url", {required: false}) || defaultUrl;
+    const deployment_id = core.getInput("deployment-id", {required: false}) || context.payload.deployment.id;
     const description = core.getInput("description", {required: false});
     const env = core.getInput("environment", {required: false});
     const envUrl = core.getInput("environment-url", {required: false});
@@ -16,7 +17,7 @@ async function run() {
     const client = new github.GitHub(token);
     const params = {
       ...context.repo,
-      deployment_id: context.payload.deployment.id,
+      deployment_id: deployment_id,
       state,
       log_url: url,
       target_url: url,