diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9b8908b2..d12188bf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [4.2.0](https://github.com/OctopusDeploy/deploy-release-action/compare/v4.1.1...v4.2.0) (2026-04-09)
+
+
+### Features
+
+* add support for deploy_at and deploy_at_expiry inputs ([#296](https://github.com/OctopusDeploy/deploy-release-action/issues/296)) ([fdadc7d](https://github.com/OctopusDeploy/deploy-release-action/commit/fdadc7d668134acbeaa5cc67ac814d42ea3f0dfb))
+
 ## [4.1.1](https://github.com/OctopusDeploy/deploy-release-action/compare/v4.1.0...v4.1.1) (2026-03-25)
 
 
diff --git a/dist/index.js b/dist/index.js
index 73b7000d..45cdb4f7 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -57928,7 +57928,9 @@ function getInputParameters() {
     releaseNumber: getInput("release_number", { required: true }),
     environments: getMultilineInput("environments", { required: true }).map((p) => p.trim()),
     useGuidedFailure: getBooleanInput("use_guided_failure") || void 0,
-    variables: variablesMap
+    variables: variablesMap,
+    runAt: getInput("deploy_at") ? new Date(getInput("deploy_at")) : void 0,
+    noRunAfter: getInput("deploy_at_expiry") ? new Date(getInput("deploy_at_expiry")) : void 0
   };
   const errors = [];
   if (!parameters.server) {
@@ -57946,6 +57948,14 @@ function getInputParameters() {
       "The Octopus space name is required, please specify explicitly through the 'space' input or set the OCTOPUS_SPACE environment variable."
     );
   }
+  const deployAt = getInput("deploy_at");
+  if (deployAt && isNaN(new Date(deployAt).getTime())) {
+    errors.push(`deploy_at '${deployAt}' is not a valid ISO 8601 date-time string.`);
+  }
+  const deployAtExpiry = getInput("deploy_at_expiry");
+  if (deployAtExpiry && isNaN(new Date(deployAtExpiry).getTime())) {
+    errors.push(`deploy_at_expiry '${deployAtExpiry}' is not a valid ISO 8601 date-time string.`);
+  }
   if (errors.length > 0) {
     throw new Error(errors.join("\n"));
   }
@@ -57966,7 +57976,9 @@ async function createDeploymentFromInputs(client, parameters) {
     ReleaseVersion: parameters.releaseNumber,
     EnvironmentNames: parameters.environments,
     UseGuidedFailure: parameters.useGuidedFailure,
-    Variables: parameters.variables
+    Variables: parameters.variables,
+    RunAt: parameters.runAt,
+    NoRunAfter: parameters.noRunAfter
   };
   const deploymentRepository = new import_api_client.DeploymentRepository(client, parameters.space);
   const response = await deploymentRepository.create(command);
diff --git a/package-lock.json b/package-lock.json
index ce42a4bd..6e9b21b5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "deploy-release-action",
-  "version": "4.1.1",
+  "version": "4.2.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "deploy-release-action",
-      "version": "4.1.1",
+      "version": "4.2.0",
       "license": "Apache-2.0",
       "dependencies": {
         "@actions/core": "3.0.0",
diff --git a/package.json b/package.json
index 02183a39..6fb5ed65 100644
--- a/package.json
+++ b/package.json
@@ -101,5 +101,5 @@
     "test:unit": "node --experimental-vm-modules node_modules/jest/bin/jest.js --ci --reporters=default --reporters=jest-junit --testPathPattern=__tests__/unit",
     "test:integration": "node --experimental-vm-modules node_modules/jest/bin/jest.js --ci --reporters=default --reporters=jest-junit --testPathPattern=__tests__/integration"
   },
-  "version": "4.1.1"
+  "version": "4.2.0"
 }