diff --git a/lib/tasks/conference.js b/lib/tasks/conference.js
index 9d260f36..4d5cb503 100644
--- a/lib/tasks/conference.js
+++ b/lib/tasks/conference.js
@@ -48,7 +48,7 @@ class Conference extends Task {
     this.confName = this.data.name;
     [
       'beep', 'startConferenceOnEnter', 'endConferenceOnExit', 'joinMuted',
-      'maxParticipants', 'waitHook', 'statusHook', 'endHook', 'enterHook'
+      'maxParticipants', 'waitHook', 'statusHook', 'endHook', 'enterHook', 'endConferenceDuration'
     ].forEach((attr) => this[attr] = this.data[attr]);
     this.record = this.data.record || {};
     this.statusEvents = [];
@@ -344,9 +344,13 @@ class Conference extends Task {
     }
 
     const opts = {};
-    if (this.endConferenceOnExit) Object.assign(opts, {flags: {endconf: true}});
-    if (this.startConferenceOnEnter) Object.assign(opts, {flags: {moderator: true}});
-    if (this.joinMuted) Object.assign(opts, {flags: {mute: true}});
+    if (this.endConferenceOnExit || this.startConferenceOnEnter || this.joinMuted) {
+      Object.assign(opts, {flags: {
+        ...(this.endConferenceOnExit && {endconf: true}),
+        ...(this.startConferenceOnEnter && {moderator: true}),
+        ...(this.joinMuted && {joinMuted: true}),
+      }});
+    }
 
     try {
       const {memberId, confUuid} = await this.ep.join(this.confName, opts);
@@ -389,6 +393,11 @@ class Conference extends Task {
       this.ep.api('conference', `${this.confName} set max_members ${this.maxParticipants}`)
         .catch((err) => this.logger.error(err, `Error setting max participants to ${this.maxParticipants}`));
     }
+
+    if (typeof this.endConferenceDuration === 'number' && this.endConferenceDuration >= 0) {
+      this.ep.api('conference', `${this.confName} set endconference_grace_time ${this.endConferenceDuration}`)
+        .catch((err) => this.logger.error(err, `Error setting end conference time to ${this.endConferenceDuration}`));
+    }
   }
 
   /**
diff --git a/package-lock.json b/package-lock.json
index 0ede0450..71c3a60b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -17,7 +17,7 @@
         "@jambonz/speech-utils": "^0.0.19",
         "@jambonz/stats-collector": "^0.1.9",
         "@jambonz/time-series": "^0.2.8",
-        "@jambonz/verb-specifications": "^0.0.27",
+        "@jambonz/verb-specifications": "^0.0.30",
         "@opentelemetry/api": "^1.4.0",
         "@opentelemetry/exporter-jaeger": "^1.9.0",
         "@opentelemetry/exporter-trace-otlp-http": "^0.35.0",
@@ -3019,9 +3019,9 @@
       }
     },
     "node_modules/@jambonz/verb-specifications": {
-      "version": "0.0.27",
-      "resolved": "https://registry.npmjs.org/@jambonz/verb-specifications/-/verb-specifications-0.0.27.tgz",
-      "integrity": "sha512-DIcxhCNrgr2RTE3YrGNP15RqKyV+P8f97SPBlKd2zTM5aN2oV5xv+pRDx5gLzmrUZ5TIEaBXQN3vTmM2Zx5Q6g==",
+      "version": "0.0.30",
+      "resolved": "https://registry.npmjs.org/@jambonz/verb-specifications/-/verb-specifications-0.0.30.tgz",
+      "integrity": "sha512-IbusgtBBo2V5Tc1FvDJvkWogHOhR2tNZN6Iyb2PjUomMI48BsWKmHW/wegppKTDpBBeN3ABY+L96pvX4N0+mCw==",
       "dependencies": {
         "debug": "^4.3.4",
         "pino": "^8.8.0"
@@ -12985,9 +12985,9 @@
       }
     },
     "@jambonz/verb-specifications": {
-      "version": "0.0.27",
-      "resolved": "https://registry.npmjs.org/@jambonz/verb-specifications/-/verb-specifications-0.0.27.tgz",
-      "integrity": "sha512-DIcxhCNrgr2RTE3YrGNP15RqKyV+P8f97SPBlKd2zTM5aN2oV5xv+pRDx5gLzmrUZ5TIEaBXQN3vTmM2Zx5Q6g==",
+      "version": "0.0.30",
+      "resolved": "https://registry.npmjs.org/@jambonz/verb-specifications/-/verb-specifications-0.0.30.tgz",
+      "integrity": "sha512-IbusgtBBo2V5Tc1FvDJvkWogHOhR2tNZN6Iyb2PjUomMI48BsWKmHW/wegppKTDpBBeN3ABY+L96pvX4N0+mCw==",
       "requires": {
         "debug": "^4.3.4",
         "pino": "^8.8.0"
diff --git a/package.json b/package.json
index 5d142350..270345b8 100644
--- a/package.json
+++ b/package.json
@@ -25,13 +25,15 @@
     "jslint:fix": "eslint app.js tracer.js lib --fix"
   },
   "dependencies": {
+    "@aws-sdk/client-auto-scaling": "^3.360.0",
+    "@aws-sdk/client-sns": "^3.360.0",
     "@jambonz/db-helpers": "^0.9.1",
     "@jambonz/http-health-check": "^0.0.1",
     "@jambonz/realtimedb-helpers": "^0.8.6",
     "@jambonz/speech-utils": "^0.0.19",
     "@jambonz/stats-collector": "^0.1.9",
     "@jambonz/time-series": "^0.2.8",
-    "@jambonz/verb-specifications": "^0.0.27",
+    "@jambonz/verb-specifications": "^0.0.30",
     "@opentelemetry/api": "^1.4.0",
     "@opentelemetry/exporter-jaeger": "^1.9.0",
     "@opentelemetry/exporter-trace-otlp-http": "^0.35.0",
@@ -41,8 +43,6 @@
     "@opentelemetry/sdk-trace-base": "^1.9.0",
     "@opentelemetry/sdk-trace-node": "^1.9.0",
     "@opentelemetry/semantic-conventions": "^1.9.0",
-    "@aws-sdk/client-sns": "^3.360.0",
-    "@aws-sdk/client-auto-scaling": "^3.360.0",
     "bent": "^7.3.12",
     "debug": "^4.3.4",
     "deepcopy": "^2.1.0",