diff --git a/benchmark-bot/controller/install-release b/benchmark-bot/controller/install-release
index ef0f69c..a42e887 100755
--- a/benchmark-bot/controller/install-release
+++ b/benchmark-bot/controller/install-release
@@ -3,6 +3,7 @@ set -euo pipefail
 
 archive=${1:?application archive is required}
 repository_url=${2:?source repository URL is required}
+authorized_github_logins=${3:?authorized GitHub logins are required}
 [[ -f ${archive} ]] || { echo "Application archive does not exist" >&2; exit 2; }
 unzip -tq "${archive}"
 
@@ -37,6 +38,19 @@ chown --recursive benchmark-bot:benchmark-cache "${source_root}"
 chmod --recursive g+rX,o-rwx "${source_root}"
 find "${source_root}" -type d -exec chmod g+s {} +
 
+controller_environment=/var/lib/datafusion-pr-bot/controller.env
+if [[ -f ${controller_environment} ]]; then
+  grep --quiet '^AUTHORIZED_GITHUB_LOGINS=' "${controller_environment}" || {
+    echo "Controller environment has no GitHub authorization setting" >&2
+    exit 2
+  }
+  sed --in-place \
+    "s/^AUTHORIZED_GITHUB_LOGINS=.*/AUTHORIZED_GITHUB_LOGINS=${authorized_github_logins}/" \
+    "${controller_environment}"
+  chown benchmark-bot:benchmark-bot "${controller_environment}"
+  chmod 0600 "${controller_environment}"
+fi
+
 if systemctl cat datafusion-pr-bot.service >/dev/null 2>&1; then
   install --directory --mode 0755 /etc/systemd/system/datafusion-pr-bot.service.d
   cat > /etc/systemd/system/datafusion-pr-bot.service.d/release.conf <<'SERVICE'
diff --git a/benchmark-bot/controller/setup/05-application.sh b/benchmark-bot/controller/setup/05-application.sh
index 97bdefd..7680363 100644
--- a/benchmark-bot/controller/setup/05-application.sh
+++ b/benchmark-bot/controller/setup/05-application.sh
@@ -6,4 +6,5 @@ unzip -p ${application_temporary}/application.zip controller/install-release \
 chmod 0755 ${application_temporary}/install-release
 ${application_temporary}/install-release \
   ${application_temporary}/application.zip \
-  "{{SOURCE_REPOSITORY_URL}}"
+  "{{SOURCE_REPOSITORY_URL}}" \
+  "{{AUTHORIZED_GITHUB_LOGINS}}"
diff --git a/benchmark-bot/infra/controller.ts b/benchmark-bot/infra/controller.ts
index a64bc90..af2385c 100644
--- a/benchmark-bot/infra/controller.ts
+++ b/benchmark-bot/infra/controller.ts
@@ -84,6 +84,7 @@ export function createController(args: ControllerArguments) {
     },
     {
       dependsOn: [args.application, ...args.identityDependencies],
+      ignoreChanges: ["ami"],
     },
   );
   const publicAddress = new aws.ec2.Eip("bot-controller-address", {
diff --git a/benchmark-bot/infra/deployment.ts b/benchmark-bot/infra/deployment.ts
index 7f0c348..41093c2 100644
--- a/benchmark-bot/infra/deployment.ts
+++ b/benchmark-bot/infra/deployment.ts
@@ -10,6 +10,7 @@ export function controllerDeployCommand(
   key: string,
   versionId: string,
   repositoryUrl: string,
+  authorizedGithubLogins: string[],
 ): string {
   return `set -euo pipefail
 for attempt in $(seq 1 720); do
@@ -29,7 +30,8 @@ unzip -p "\${deployment}/application.zip" controller/install-release \
 chmod 0755 "\${deployment}/install-release"
 "\${deployment}/install-release" \
   "\${deployment}/application.zip" \
-  ${shellQuote(repositoryUrl)}
+  ${shellQuote(repositoryUrl)} \
+  ${shellQuote(authorizedGithubLogins.join(","))}
 systemctl is-active --quiet datafusion-pr-bot.service`;
 }
 
@@ -37,6 +39,7 @@ export function deployControllerApplication(
   controller: aws.ec2.Instance,
   application: aws.s3.BucketObjectv2,
   repositoryUrl: string,
+  authorizedGithubLogins: string[],
   dependencies: pulumi.Resource[],
 ): aws.ssm.Association {
   const commands = pulumi
@@ -44,7 +47,13 @@ export function deployControllerApplication(
     .apply(([bucket, key, versionId]) => {
       if (!versionId)
         throw new Error("Controller application has no S3 version");
-      return controllerDeployCommand(bucket, key, versionId, repositoryUrl);
+      return controllerDeployCommand(
+        bucket,
+        key,
+        versionId,
+        repositoryUrl,
+        authorizedGithubLogins,
+      );
     });
 
   return new aws.ssm.Association(
diff --git a/benchmark-bot/infra/foundation.ts b/benchmark-bot/infra/foundation.ts
index 3735e18..3c6ab78 100644
--- a/benchmark-bot/infra/foundation.ts
+++ b/benchmark-bot/infra/foundation.ts
@@ -72,6 +72,7 @@ export function createControllerInfrastructure(config: ControllerConfig) {
     controller,
     application,
     config.sourceRepositoryUrl,
+    config.authorizedGithubLogins,
     [identity.policy, identity.ssmAttachment],
   );
   return {
diff --git a/benchmark-bot/test/infrastructure.test.ts b/benchmark-bot/test/infrastructure.test.ts
index d394d5f..3cf9a92 100644
--- a/benchmark-bot/test/infrastructure.test.ts
+++ b/benchmark-bot/test/infrastructure.test.ts
@@ -153,6 +153,7 @@ test("deploys every controller archive through Systems Manager", () => {
   assert.match(commands, /--version-id 'version-123'/);
   assert.match(commands, /controller\/install-release/);
   assert.match(commands, /https:\/\/example\.invalid\/repository\.git/);
+  assert.match(commands, /'maintainer'/);
   assert.match(commands, /systemctl is-active --quiet datafusion-pr-bot/);
 });
 
@@ -240,6 +241,10 @@ test("installs protected controller state and verified native toolchains", () =>
   assert.match(userData, /install .*\/usr\/local\/bin\/kubectl/);
   assert.match(userData, /install .*\/usr\/local\/bin\/helm/);
   assert.match(userData, /controller\/install-release/);
+  assert.match(
+    userData,
+    /application\.zip \\\n+  "https:\/\/example\.invalid\/repository\.git" \\\n+  "maintainer"/,
+  );
   assert.match(
     userData,
     /DATAFUSION_SOURCE_ROOT=\/opt\/datafusion-pr-bot\/datafusion-distributed/,
diff --git a/benchmark-bot/test/security.test.ts b/benchmark-bot/test/security.test.ts
index c992fcb..b8996d1 100644
--- a/benchmark-bot/test/security.test.ts
+++ b/benchmark-bot/test/security.test.ts
@@ -53,6 +53,9 @@ test("keeps the shared release installer valid", () => {
   assert.match(script, /UMask=0027/);
   assert.match(script, /systemctl daemon-reload/);
   assert.match(script, /systemctl restart datafusion-pr-bot/);
+  assert.match(script, /\^AUTHORIZED_GITHUB_LOGINS=/);
+  assert.match(script, /sed --in-place/);
+  assert.match(script, /chmod 0600 "\$\{controller_environment\}"/);
 });
 
 test("isolates the shared harness build from controller credentials", () => {