diff --git a/README.md b/README.md
index 2e62536..0efeb87 100644
--- a/README.md
+++ b/README.md
@@ -185,8 +185,11 @@ jobs:
 -   <a name="timeout"></a><a href="#user-content-timeout"><code>timeout</code></a>: _(Optional)_ Maximum request execution time, specified as a duration like "10m5s" for
     ten minutes and 5 seconds.
 
--   <a name="flags"></a><a href="#user-content-flags"><code>flags</code></a>: _(Optional)_ Space separate list of other Cloud Run flags. This can be used to access
-    features that are not exposed via this GitHub Action.
+-   <a name="flags"></a><a href="#user-content-flags"><code>flags</code></a>: _(Optional)_ Space separate list of additional Cloud Run flags to pass to the deploy
+    command. This can be used to apply advanced features that are not exposed
+    via this GitHub Action. For Cloud Run services, this command will be
+    `gcloud run deploy`. For Cloud Run jobs, this command will be `gcloud jobs
+    deploy.
 
         with:
           flags: '--add-cloudsql-instances=...'
@@ -203,9 +206,7 @@ jobs:
 
     Please note, this GitHub Action does not parse or validate the flags. You
     are responsible for making sure the flags are available on the gcloud
-    version and subcommand. The provided flags will be appended to the
-    `deploy` command. When `revision_traffic` or `tag_traffic` are set, the
-    flags will also be appended to the subsequent `update-traffic` command.
+    version and subcommand.
 
 -   <a name="no_traffic"></a><a href="#user-content-no_traffic"><code>no_traffic</code></a>: _(Optional, default: `false`)_ If true, the newly deployed revision will not receive traffic. This option
     is only applies to services.
@@ -231,6 +232,28 @@ jobs:
     This is mutually-exclusive with `revision_traffic`. This option is only
     applies to services.
 
+-   <a name="update_traffic_flags"></a><a href="#user-content-update_traffic_flags"><code>update_traffic_flags</code></a>: _(Optional)_ Space separate list of additional Cloud Run flags to pass to the `gcloud
+    run services update-traffic` command. This can be used to apply advanced
+    features that are not exposed via this GitHub Action. This flag only
+    applies with `revision_traffic` or `tag_traffic` is set.
+
+        with:
+          traffic_flags: '--set-tags=...'
+
+    Flags that include other flags must quote the _entire_ outer flag value. For
+    example, to pass `--args=-X=123`:
+
+        with:
+          flags: '--set-tags=... "--args=-X=123"'
+
+    See the [complete list of
+    flags](https://cloud.google.com/sdk/gcloud/reference/run/services/update#FLAGS)
+    for more information.
+
+    Please note, this GitHub Action does not parse or validate the flags. You
+    are responsible for making sure the flags are available on the gcloud
+    version and subcommand.
+
 -   <a name="project_id"></a><a href="#user-content-project_id"><code>project_id</code></a>: _(Optional)_ ID of the Google Cloud project in which to deploy the service.
 
 -   <a name="region"></a><a href="#user-content-region"><code>region</code></a>: _(Optional, default: `us-central1`)_ Region in which the Cloud Run services are deployed.
diff --git a/action.yml b/action.yml
index 5e4a4d2..f5270e8 100644
--- a/action.yml
+++ b/action.yml
@@ -198,8 +198,11 @@ inputs:
 
   flags:
     description: |-
-      Space separate list of other Cloud Run flags. This can be used to access
-      features that are not exposed via this GitHub Action.
+      Space separate list of additional Cloud Run flags to pass to the deploy
+      command. This can be used to apply advanced features that are not exposed
+      via this GitHub Action. For Cloud Run services, this command will be
+      `gcloud run deploy`. For Cloud Run jobs, this command will be `gcloud jobs
+      deploy.
 
           with:
             flags: '--add-cloudsql-instances=...'
@@ -216,9 +219,7 @@ inputs:
 
       Please note, this GitHub Action does not parse or validate the flags. You
       are responsible for making sure the flags are available on the gcloud
-      version and subcommand. The provided flags will be appended to the
-      `deploy` command. When `revision_traffic` or `tag_traffic` are set, the
-      flags will also be appended to the subsequent `update-traffic` command.
+      version and subcommand.
     required: false
 
   no_traffic:
@@ -255,6 +256,31 @@ inputs:
       applies to services.
     required: false
 
+  update_traffic_flags:
+    description: |-
+      Space separate list of additional Cloud Run flags to pass to the `gcloud
+      run services update-traffic` command. This can be used to apply advanced
+      features that are not exposed via this GitHub Action. This flag only
+      applies with `revision_traffic` or `tag_traffic` is set.
+
+          with:
+            traffic_flags: '--set-tags=...'
+
+      Flags that include other flags must quote the _entire_ outer flag value. For
+      example, to pass `--args=-X=123`:
+
+          with:
+            flags: '--set-tags=... "--args=-X=123"'
+
+      See the [complete list of
+      flags](https://cloud.google.com/sdk/gcloud/reference/run/services/update#FLAGS)
+      for more information.
+
+      Please note, this GitHub Action does not parse or validate the flags. You
+      are responsible for making sure the flags are available on the gcloud
+      version and subcommand.
+    required: false
+
   project_id:
     description: |-
       ID of the Google Cloud project in which to deploy the service.
diff --git a/src/main.ts b/src/main.ts
index 4f4076e..a18900c 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -118,6 +118,7 @@ export async function run(): Promise<void> {
     const labels = parseKVString(getInput('labels'));
     const skipDefaultLabels = parseBoolean(getInput('skip_default_labels'));
     const flags = getInput('flags');
+    const updateTrafficFlags = getInput('update_traffic_flags');
 
     let deployCmd: string[] = [];
 
@@ -262,11 +263,18 @@ export async function run(): Promise<void> {
       updateTrafficCmd.push('--project', projectId);
     }
 
-    // Add optional flags
+    // Add optional deploy flags
     if (flags) {
       const flagList = parseFlags(flags);
       if (flagList) {
         deployCmd = deployCmd.concat(flagList);
+      }
+    }
+
+    // Add optional update-traffic flags
+    if (updateTrafficFlags) {
+      const flagList = parseFlags(updateTrafficFlags);
+      if (flagList) {
         updateTrafficCmd = updateTrafficCmd.concat(flagList);
       }
     }
diff --git a/tests/unit/main.test.ts b/tests/unit/main.test.ts
index a0cac83..82f13dc 100644
--- a/tests/unit/main.test.ts
+++ b/tests/unit/main.test.ts
@@ -398,6 +398,18 @@ test('#run', { concurrency: true }, async (suite) => {
     assertMembers(args, ['--tag', 'test']);
   });
 
+  await suite.test('sets additional flags on the deploy command', async (t) => {
+    const mocks = defaultMocks(t.mock, {
+      service: 'my-test-service',
+      flags: '--arg1=1 --arg2=2',
+    });
+
+    await run();
+
+    const args = mocks.getExecOutput.mock.calls?.at(0)?.arguments?.at(1);
+    assertMembers(args, ['--arg1', '1', '--arg2', '2']);
+  });
+
   await suite.test('sets tag traffic if given', async (t) => {
     const mocks = defaultMocks(t.mock, {
       service: 'my-test-service',
@@ -457,6 +469,19 @@ test('#run', { concurrency: true }, async (suite) => {
     assertMembers(updateTrafficArgs, ['--to-revisions', 'TEST=100']);
   });
 
+  await suite.test('sets additional flags on the update-traffic command', async (t) => {
+    const mocks = defaultMocks(t.mock, {
+      service: 'my-test-service',
+      tag_traffic: 'test',
+      update_traffic_flags: '--arg1=1 --arg2=2',
+    });
+
+    await run();
+
+    const args = mocks.getExecOutput.mock.calls?.at(1)?.arguments?.at(1);
+    assertMembers(args, ['--arg1', '1', '--arg2', '2']);
+  });
+
   await suite.test('fails if service is not provided with revision traffic', async (t) => {
     defaultMocks(t.mock, {
       service: '',