diff --git a/sdk/monitor/monitor-opentelemetry-exporter/CHANGELOG.md b/sdk/monitor/monitor-opentelemetry-exporter/CHANGELOG.md
index 9af3ae0ec388..f9b6465e916b 100644
--- a/sdk/monitor/monitor-opentelemetry-exporter/CHANGELOG.md
+++ b/sdk/monitor/monitor-opentelemetry-exporter/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Release History
 
+## 1.0.0-beta.21 (2024-03-08)
+
+### Bugs Fixed
+
+- Fix issue with duration calculation for Spans.
+
 ## 1.0.0-beta.20 (2024-02-13)
 
 ### Bugs Fixed
diff --git a/sdk/monitor/monitor-opentelemetry-exporter/package.json b/sdk/monitor/monitor-opentelemetry-exporter/package.json
index 22d4adbe930f..3c4e80bbbd31 100644
--- a/sdk/monitor/monitor-opentelemetry-exporter/package.json
+++ b/sdk/monitor/monitor-opentelemetry-exporter/package.json
@@ -2,7 +2,7 @@
   "name": "@azure/monitor-opentelemetry-exporter",
   "author": "Microsoft Corporation",
   "sdk-type": "client",
-  "version": "1.0.0-beta.20",
+  "version": "1.0.0-beta.21",
   "description": "Application Insights exporter for the OpenTelemetry JavaScript (Node.js) SDK",
   "main": "dist/index.js",
   "module": "dist-esm/src/index.js",
diff --git a/sdk/monitor/monitor-opentelemetry-exporter/src/generated/applicationInsightsClient.ts b/sdk/monitor/monitor-opentelemetry-exporter/src/generated/applicationInsightsClient.ts
index b15758c28ad1..2f4daae782f5 100644
--- a/sdk/monitor/monitor-opentelemetry-exporter/src/generated/applicationInsightsClient.ts
+++ b/sdk/monitor/monitor-opentelemetry-exporter/src/generated/applicationInsightsClient.ts
@@ -32,7 +32,7 @@ export class ApplicationInsightsClient extends coreClient.ServiceClient {
       requestContentType: "application/json; charset=utf-8",
     };
 
-    const packageDetails = `azsdk-js-monitor-opentelemetry-exporter/1.0.0-beta.20`;
+    const packageDetails = `azsdk-js-monitor-opentelemetry-exporter/1.0.0-beta.21`;
     const userAgentPrefix =
       options.userAgentOptions && options.userAgentOptions.userAgentPrefix
         ? `${options.userAgentOptions.userAgentPrefix} ${packageDetails}`
diff --git a/sdk/monitor/monitor-opentelemetry-exporter/src/utils/constants/applicationinsights.ts b/sdk/monitor/monitor-opentelemetry-exporter/src/utils/constants/applicationinsights.ts
index 92fce431630f..3c9293d5678f 100644
--- a/sdk/monitor/monitor-opentelemetry-exporter/src/utils/constants/applicationinsights.ts
+++ b/sdk/monitor/monitor-opentelemetry-exporter/src/utils/constants/applicationinsights.ts
@@ -1,5 +1,5 @@
 // Copyright (c) Microsoft Corporation.
-// Licensed under the MIT license.
+// Licensed under the MIT license
 
 /**
  * AI MS Links.
@@ -20,7 +20,7 @@ export const TIME_SINCE_ENQUEUED = "timeSinceEnqueued";
  * AzureMonitorTraceExporter version.
  * @internal
  */
-export const packageVersion = "1.0.0-beta.20";
+export const packageVersion = "1.0.0-beta.21";
 
 export enum DependencyTypes {
   InProc = "InProc",
diff --git a/sdk/monitor/monitor-opentelemetry-exporter/swagger/README.md b/sdk/monitor/monitor-opentelemetry-exporter/swagger/README.md
index 2df979fb93b1..37d228fabb40 100644
--- a/sdk/monitor/monitor-opentelemetry-exporter/swagger/README.md
+++ b/sdk/monitor/monitor-opentelemetry-exporter/swagger/README.md
@@ -25,7 +25,7 @@ input-file: https://github.com/Azure/azure-rest-api-specs/blob/main/specificatio
 add-credentials: false
 use-extension:
   "@autorest/typescript": "latest"
-package-version: 1.0.0-beta.20
+package-version: 1.0.0-beta.21
 typescript: true
 v3: true
 ```
diff --git a/sdk/monitor/monitor-opentelemetry/package.json b/sdk/monitor/monitor-opentelemetry/package.json
index 379de06da1e9..3cf862fe7383 100644
--- a/sdk/monitor/monitor-opentelemetry/package.json
+++ b/sdk/monitor/monitor-opentelemetry/package.json
@@ -90,7 +90,7 @@
     "@azure/core-rest-pipeline": "^1.1.0",
     "@azure/functions": "^3.2.0",
     "@azure/logger": "^1.0.0",
-    "@azure/monitor-opentelemetry-exporter": "1.0.0-beta.20",
+    "@azure/monitor-opentelemetry-exporter": "1.0.0-beta.21",
     "@azure/opentelemetry-instrumentation-azure-sdk": "^1.0.0-beta.5",
     "@opentelemetry/api": "^1.7.0",
     "@opentelemetry/api-logs": "^0.48.0",
diff --git a/sdk/monitor/monitor-query/package.json b/sdk/monitor/monitor-query/package.json
index 03990ec685bd..577c5adfda83 100644
--- a/sdk/monitor/monitor-query/package.json
+++ b/sdk/monitor/monitor-query/package.json
@@ -101,7 +101,7 @@
     "@azure/eslint-plugin-azure-sdk": "^3.0.0",
     "@azure/abort-controller": "^1.0.0",
     "@azure/identity": "^4.0.1",
-    "@azure/monitor-opentelemetry-exporter": "1.0.0-beta.20",
+    "@azure/monitor-opentelemetry-exporter": "1.0.0-beta.21",
     "@azure/test-utils": "^1.0.0",
     "@azure-tools/test-recorder": "^3.0.0",
     "@microsoft/api-extractor": "^7.31.1",