diff --git a/CHANGELOG.md b/CHANGELOG.md
index 86defa7..a0defef 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 0.3.4 (2024-09-16)
+
+- Defender: Add `metadata` option. ([#75](https://github.com/OpenZeppelin/openzeppelin-foundry-upgrades/pull/75))
+
 ## 0.3.3 (2024-08-26)
 
 - Defender: Fix error in `proposeUpgrade` when project path has a space. ([#71](https://github.com/OpenZeppelin/openzeppelin-foundry-upgrades/pull/71))
diff --git a/docs/modules/api/pages/Options.adoc b/docs/modules/api/pages/Options.adoc
index 6b24e59..eb71a59 100644
--- a/docs/modules/api/pages/Options.adoc
+++ b/docs/modules/api/pages/Options.adoc
@@ -38,6 +38,7 @@ struct DefenderOptions {
   string licenseType;
   bool skipLicenseType;
   struct TxOverrides txOverrides;
+  string metadata;
 }
 ```
 
diff --git a/package.json b/package.json
index ef55d3b..d2da5dd 100644
--- a/package.json
+++ b/package.json
@@ -23,7 +23,7 @@
     "@openzeppelin/contracts-upgradeable": "^5.0.2",
     "@openzeppelin/contracts-v4": "npm:@openzeppelin/contracts@^v4.9.6",
     "@openzeppelin/contracts-upgradeable-v4": "npm:@openzeppelin/contracts-upgradeable@^v4.9.6",
-    "@openzeppelin/defender-deploy-client-cli": "0.0.1-alpha.7",
+    "@openzeppelin/defender-deploy-client-cli": "0.0.1-alpha.9",
     "@openzeppelin/upgrades-core": "^1.32.3",
     "hardhat": "^2.21.0",
     "prettier": "^3.0.0",
diff --git a/src/Options.sol b/src/Options.sol
index 1d2bbf8..71225a6 100644
--- a/src/Options.sol
+++ b/src/Options.sol
@@ -89,6 +89,12 @@ struct DefenderOptions {
      * Transaction overrides for OpenZeppelin Defender deployments.
      */
     TxOverrides txOverrides;
+    /*
+     * When using OpenZeppelin Defender deployments, you can use this to identify, tag, or classify deployments.
+     * See https://docs.openzeppelin.com/defender/module/deploy#metadata.
+     * Must be a JSON string, for example: '{ "commitHash": "4ae3e0d", "tag": "v1.0.0", "anyOtherField": "anyValue" }'
+     */
+    string metadata;
 }
 
 /**
diff --git a/src/internal/DefenderDeploy.sol b/src/internal/DefenderDeploy.sol
index 2d8b730..63b1cb1 100644
--- a/src/internal/DefenderDeploy.sol
+++ b/src/internal/DefenderDeploy.sol
@@ -117,6 +117,10 @@ library DefenderDeploy {
             inputBuilder[i++] = "--maxPriorityFeePerGas";
             inputBuilder[i++] = Strings.toString(defenderOpts.txOverrides.maxPriorityFeePerGas);
         }
+        if (!(defenderOpts.metadata).toSlice().empty()) {
+            inputBuilder[i++] = "--metadata";
+            inputBuilder[i++] = string(abi.encodePacked('"', vm.replace(defenderOpts.metadata, '"', '\\"'), '"'));
+        }
 
         // Create a copy of inputs but with the correct length
         string[] memory inputs = new string[](i);
diff --git a/src/internal/Versions.sol b/src/internal/Versions.sol
index 1be0f66..3ac256e 100644
--- a/src/internal/Versions.sol
+++ b/src/internal/Versions.sol
@@ -4,5 +4,5 @@ pragma solidity ^0.8.0;
 library Versions {
     // TODO add a workflow to update this automatically based on package.json
     string constant UPGRADES_CORE = "^1.32.3";
-    string constant DEFENDER_DEPLOY_CLIENT_CLI = "0.0.1-alpha.7";
+    string constant DEFENDER_DEPLOY_CLIENT_CLI = "0.0.1-alpha.9";
 }
diff --git a/test/internal/DefenderDeploy.t.sol b/test/internal/DefenderDeploy.t.sol
index da15593..942b00f 100644
--- a/test/internal/DefenderDeploy.t.sol
+++ b/test/internal/DefenderDeploy.t.sol
@@ -100,6 +100,7 @@ contract DefenderDeployTest is Test {
         opts.txOverrides.gasPrice = 1 gwei;
         opts.txOverrides.maxFeePerGas = 2 gwei;
         opts.txOverrides.maxPriorityFeePerGas = 0.5 gwei;
+        opts.metadata = '{ "commitHash": "4ae3e0d", "tag": "v1.0.0", "anyOtherField": "anyValue" }';
 
         string memory commandString = _toString(
             DefenderDeploy.buildDeployCommand(contractInfo, buildInfoFile, constructorData, opts)
@@ -112,7 +113,8 @@ contract DefenderDeployTest is Test {
                 Versions.DEFENDER_DEPLOY_CLIENT_CLI,
                 " deploy --contractName WithConstructor --contractPath test/contracts/WithConstructor.sol --chainId 31337 --buildInfoFile ",
                 buildInfoFile,
-                ' --constructorBytecode 0x000000000000000000000000000000000000000000000000000000000000007b --licenseType "My License Type" --relayerId my-relayer-id --salt 0xabc0000000000000000000000000000000000000000000000000000000000123 --gasLimit 100000 --gasPrice 1000000000 --maxFeePerGas 2000000000 --maxPriorityFeePerGas 500000000'
+                ' --constructorBytecode 0x000000000000000000000000000000000000000000000000000000000000007b --licenseType "My License Type" --relayerId my-relayer-id --salt 0xabc0000000000000000000000000000000000000000000000000000000000123 --gasLimit 100000 --gasPrice 1000000000 --maxFeePerGas 2000000000 --maxPriorityFeePerGas 500000000',
+                ' --metadata "{ \\"commitHash\\": \\"4ae3e0d\\", \\"tag\\": \\"v1.0.0\\", \\"anyOtherField\\": \\"anyValue\\" }"'
             )
         );
     }
diff --git a/yarn.lock b/yarn.lock
index 35bc205..4257e48 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -57,7 +57,7 @@
     chalk "^2.4.2"
     js-tokens "^4.0.0"
 
-"@ethersproject/abi@^5.1.2", "@ethersproject/abi@^5.7.0":
+"@ethersproject/abi@^5.1.2":
   version "5.7.0"
   resolved "https://registry.yarnpkg.com/@ethersproject/abi/-/abi-5.7.0.tgz#b3f3e045bbbeed1af3947335c247ad625a44e449"
   integrity sha512-351ktp42TiRcYB3H1OP8yajPeAQstMW/yCFokj/AthP9bLHzQFPlOrxOcwYEDkUAICmOHljvN4K39OMTMUa9RA==
@@ -443,43 +443,41 @@
   resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-5.0.2.tgz#b1d03075e49290d06570b2fd42154d76c2a5d210"
   integrity sha512-ytPc6eLGcHHnapAZ9S+5qsdomhjo6QBHTDRRBFfTxXIpsicMhVPouPgmUPebZZZGX7vt9USA+Z+0M0dSVtSUEA==
 
-"@openzeppelin/defender-deploy-client-cli@0.0.1-alpha.7":
-  version "0.0.1-alpha.7"
-  resolved "https://registry.yarnpkg.com/@openzeppelin/defender-deploy-client-cli/-/defender-deploy-client-cli-0.0.1-alpha.7.tgz#177f8c027f97f5e03a71fcda18b4c742ade2e870"
-  integrity sha512-BHJc45sES8X5r6N4YuLb6TFoglTDbPWBCYmHcqajMsrhkWMQj0relIH0e9YK68shGpYXJHKskjJmG6W3EHEh1w==
+"@openzeppelin/defender-deploy-client-cli@0.0.1-alpha.9":
+  version "0.0.1-alpha.9"
+  resolved "https://registry.yarnpkg.com/@openzeppelin/defender-deploy-client-cli/-/defender-deploy-client-cli-0.0.1-alpha.9.tgz#e9067c96b72e7fc5bd536ce10e8fcbc8ef519759"
+  integrity sha512-EablwUBEiLwOJuNNRWeLx5C8wq+deq0x8MacRskQ1XvyiqKnh4+M1GyKqVUEIJ4R7aarBTE3Qb566K96+vIRhA==
   dependencies:
-    "@openzeppelin/defender-sdk-base-client" "^1.10.0"
-    "@openzeppelin/defender-sdk-deploy-client" "^1.10.0"
-    "@openzeppelin/defender-sdk-network-client" "^1.10.0"
+    "@openzeppelin/defender-sdk-base-client" "^1.14.4"
+    "@openzeppelin/defender-sdk-deploy-client" "^1.14.4"
+    "@openzeppelin/defender-sdk-network-client" "^1.14.4"
     dotenv "^16.3.1"
     minimist "^1.2.8"
 
-"@openzeppelin/defender-sdk-base-client@^1.10.0":
-  version "1.10.0"
-  resolved "https://registry.yarnpkg.com/@openzeppelin/defender-sdk-base-client/-/defender-sdk-base-client-1.10.0.tgz#038a5b13f92e03de42382ec331b670f40a915816"
-  integrity sha512-V21oI4G54sdEJ9lVN8q5OqfFRUoVDzjeXfWgpQvUpfy69r56NnE57D6e5RLG1fRp1J0APfW3lFjaaLwl0kqZpg==
+"@openzeppelin/defender-sdk-base-client@^1.14.4":
+  version "1.14.4"
+  resolved "https://registry.yarnpkg.com/@openzeppelin/defender-sdk-base-client/-/defender-sdk-base-client-1.14.4.tgz#3ccd3beb94cba61883f769afe7e6fdbdc5daa12d"
+  integrity sha512-tOePVQLKpqfGQ1GMzHvSBNd2psPYd86LDNpvdl5gjD0Y2kW/zNh5qBXy29RraGtk/qc8zs9hzS5pAOh0vhGkGQ==
   dependencies:
     amazon-cognito-identity-js "^6.3.6"
     async-retry "^1.3.3"
 
-"@openzeppelin/defender-sdk-deploy-client@^1.10.0":
-  version "1.10.0"
-  resolved "https://registry.yarnpkg.com/@openzeppelin/defender-sdk-deploy-client/-/defender-sdk-deploy-client-1.10.0.tgz#64d7789eceede36ec12dcdae0dc4b67ffa7ae97d"
-  integrity sha512-PckmUQYwe26/u/s3sjLateSNtKQ0tdAaOyP6spsgaT+us+XUUqAt/EUfEJdGpt8JApsRWYzrQzH6Z0ywoUyqyw==
+"@openzeppelin/defender-sdk-deploy-client@^1.14.4":
+  version "1.14.4"
+  resolved "https://registry.yarnpkg.com/@openzeppelin/defender-sdk-deploy-client/-/defender-sdk-deploy-client-1.14.4.tgz#1feb94575a32ed4ddee81d03cdb060064936a528"
+  integrity sha512-+diSoz1zid37LMsY2RDxI+uAsYx9Eryg8Vz+yfvuyd56fXrzjQEln7BBtYQw+2zp9yvyAByOL5XSQdrQga9OBQ==
   dependencies:
-    "@ethersproject/abi" "^5.7.0"
-    "@openzeppelin/defender-sdk-base-client" "^1.10.0"
-    axios "^1.6.7"
+    "@openzeppelin/defender-sdk-base-client" "^1.14.4"
+    axios "^1.7.2"
     lodash "^4.17.21"
 
-"@openzeppelin/defender-sdk-network-client@^1.10.0":
-  version "1.10.0"
-  resolved "https://registry.yarnpkg.com/@openzeppelin/defender-sdk-network-client/-/defender-sdk-network-client-1.10.0.tgz#0da6113d994f1b48a4cee4313e1befc31acab800"
-  integrity sha512-nrSuJ4KKhTIO2f1WIKtCq0XbeHb4ExqvpIE2g4yf/k8DmZuM9SR6xNDLz7wuKt11u+U88AYBN9MoiKRo/ybp6w==
+"@openzeppelin/defender-sdk-network-client@^1.14.4":
+  version "1.14.4"
+  resolved "https://registry.yarnpkg.com/@openzeppelin/defender-sdk-network-client/-/defender-sdk-network-client-1.14.4.tgz#0f89c45f601e28c2f87c487b62b48d9cd4b5b956"
+  integrity sha512-OS0H5b0vgYacJcwkvUFJUaRuyUaXhIRl916W5xLvGia5H6i/qn3dP8MZ7oLcPwKc8jB+ucRytO4H/AHsea0aVA==
   dependencies:
-    "@ethersproject/abi" "^5.7.0"
-    "@openzeppelin/defender-sdk-base-client" "^1.10.0"
-    axios "^1.6.7"
+    "@openzeppelin/defender-sdk-base-client" "^1.14.4"
+    axios "^1.7.2"
     lodash "^4.17.21"
 
 "@openzeppelin/upgrades-core@^1.32.3":
@@ -816,12 +814,12 @@ available-typed-arrays@^1.0.5:
   resolved "https://registry.yarnpkg.com/available-typed-arrays/-/available-typed-arrays-1.0.5.tgz#92f95616501069d07d10edb2fc37d3e1c65123b7"
   integrity sha512-DMD0KiN46eipeziST1LPP/STfDU0sufISXmjSgvVsoU2tqxctQeASejWcfNtxYKqETM1UxQ8sp2OrSBWpHY6sw==
 
-axios@^1.6.7:
-  version "1.6.7"
-  resolved "https://registry.yarnpkg.com/axios/-/axios-1.6.7.tgz#7b48c2e27c96f9c68a2f8f31e2ab19f59b06b0a7"
-  integrity sha512-/hDJGff6/c7u0hDkvkGxR/oy6CbCs8ziCsC7SqmhjfozqiJGc8Z11wrv9z9lYfY4K8l+H9TpjcMDX0xOZmx+RA==
+axios@^1.7.2:
+  version "1.7.7"
+  resolved "https://registry.yarnpkg.com/axios/-/axios-1.7.7.tgz#2f554296f9892a72ac8d8e4c5b79c14a91d0a47f"
+  integrity sha512-S4kL7XrjgBmvdGut0sN3yJxqYzrDOnivkBiN0OFs6hLiUam3UPvswUo0kqGyhqUZGEOytHyumEdXsAkgCOUf3Q==
   dependencies:
-    follow-redirects "^1.15.4"
+    follow-redirects "^1.15.6"
     form-data "^4.0.0"
     proxy-from-env "^1.1.0"
 
@@ -1458,11 +1456,16 @@ flat@^5.0.2:
   resolved "https://registry.yarnpkg.com/flat/-/flat-5.0.2.tgz#8ca6fe332069ffa9d324c327198c598259ceb241"
   integrity sha512-b6suED+5/3rTpUBdG1gupIl8MPFCAMA0QXwmljLhvCUKcUvdE4gWky9zpuGCcXHOsz4J9wPGNWq6OKpmIzz3hQ==
 
-follow-redirects@^1.12.1, follow-redirects@^1.15.4:
+follow-redirects@^1.12.1:
   version "1.15.5"
   resolved "https://registry.yarnpkg.com/follow-redirects/-/follow-redirects-1.15.5.tgz#54d4d6d062c0fa7d9d17feb008461550e3ba8020"
   integrity sha512-vSFWUON1B+yAw1VN4xMfxgn5fTUiaOzAJCKBwIIgT/+7CuGy9+r+5gITvP62j3RmaD5Ph65UaERdOSRGUzZtgw==
 
+follow-redirects@^1.15.6:
+  version "1.15.9"
+  resolved "https://registry.yarnpkg.com/follow-redirects/-/follow-redirects-1.15.9.tgz#a604fa10e443bf98ca94228d9eebcc2e8a2c8ee1"
+  integrity sha512-gew4GsXizNgdoRyqmyfMHyAmXsZDk6mHkSxZFCzW9gwlbtOW44CDtYavM+y+72qD/Vq2l550kMF52DT8fOLJqQ==
+
 for-each@^0.3.3:
   version "0.3.3"
   resolved "https://registry.yarnpkg.com/for-each/-/for-each-0.3.3.tgz#69b447e88a0a5d32c3e7084f3f1710034b21376e"