diff --git a/packages/junior/package.json b/packages/junior/package.json
index bbc3aca7e..e55f60623 100644
--- a/packages/junior/package.json
+++ b/packages/junior/package.json
@@ -39,6 +39,10 @@
     "./vercel": {
       "types": "./dist/vercel.d.ts",
       "default": "./dist/vercel.js"
+    },
+    "./version": {
+      "types": "./dist/version.d.ts",
+      "default": "./dist/version.js"
     }
   },
   "files": [
diff --git a/packages/junior/src/app.ts b/packages/junior/src/app.ts
index 46307fb71..31e74c5fa 100644
--- a/packages/junior/src/app.ts
+++ b/packages/junior/src/app.ts
@@ -67,6 +67,7 @@ import { createAgentRunner } from "@/chat/runtime/agent-runner";
 import type { WaitUntilFn } from "@/handlers/types";
 
 export { defineJuniorPlugins } from "./plugins";
+export { JUNIOR_VERSION } from "./version";
 export type {
   JuniorPluginInput,
   JuniorPluginSet,
diff --git a/packages/junior/src/deployment.ts b/packages/junior/src/deployment.ts
index 3660f259a..c7769be5b 100644
--- a/packages/junior/src/deployment.ts
+++ b/packages/junior/src/deployment.ts
@@ -1,3 +1,5 @@
+import { JUNIOR_VERSION } from "@/version";
+
 export const JUNIOR_HEARTBEAT_ROUTE = "/api/internal/heartbeat";
 export const JUNIOR_HEARTBEAT_CRON_SCHEDULE = "* * * * *";
 export const JUNIOR_RETENTION_ROUTE = "/api/internal/retention";
@@ -28,6 +30,7 @@ export function getDeploymentTelemetryAttributes(): Record<string, string> {
   const attributes: Record<string, string> = {};
   const serviceVersion = getDeploymentServiceVersion();
   const deploymentId = toOptionalTrimmed(process.env.VERCEL_DEPLOYMENT_ID);
+  attributes["app.junior.version"] = JUNIOR_VERSION;
   if (serviceVersion) {
     attributes["service.version"] = serviceVersion;
   }
diff --git a/packages/junior/src/version.ts b/packages/junior/src/version.ts
new file mode 100644
index 000000000..70f06f25e
--- /dev/null
+++ b/packages/junior/src/version.ts
@@ -0,0 +1,7 @@
+import packageMetadata from "../package.json" with { type: "json" };
+
+/** Installed Junior package version, or `unknown` when package metadata is unavailable. */
+export const JUNIOR_VERSION =
+  typeof packageMetadata.version === "string" && packageMetadata.version.trim()
+    ? packageMetadata.version
+    : "unknown";
diff --git a/packages/junior/tests/unit/instrumentation.test.ts b/packages/junior/tests/unit/instrumentation.test.ts
index dab8df871..0d87ecb38 100644
--- a/packages/junior/tests/unit/instrumentation.test.ts
+++ b/packages/junior/tests/unit/instrumentation.test.ts
@@ -1,4 +1,5 @@
 import { afterEach, describe, expect, it, vi } from "vitest";
+import { JUNIOR_VERSION } from "@/version";
 import { runWithConversationPrivacy } from "@/chat/conversation-privacy";
 
 const ORIGINAL_SENTRY_DSN = process.env.SENTRY_DSN;
@@ -114,6 +115,7 @@ describe("initSentry", () => {
 
     expect(globalScope.setAttributes).toHaveBeenCalledWith(
       expect.objectContaining({
+        "app.junior.version": JUNIOR_VERSION,
         "deployment.id": "dpl_123",
         "service.version": "git-sha",
       }),
diff --git a/packages/junior/tests/unit/logging/deployment-attributes.test.ts b/packages/junior/tests/unit/logging/deployment-attributes.test.ts
index 7002be868..091df526d 100644
--- a/packages/junior/tests/unit/logging/deployment-attributes.test.ts
+++ b/packages/junior/tests/unit/logging/deployment-attributes.test.ts
@@ -1,4 +1,5 @@
 import { afterEach, describe, expect, it, vi } from "vitest";
+import { JUNIOR_VERSION } from "@/version";
 import type { EmittedLogRecord } from "@/chat/logging";
 
 const ORIGINAL_SENTRY_RELEASE = process.env.SENTRY_RELEASE;
@@ -72,6 +73,7 @@ describe("deployment log attributes", () => {
 
     expect(records).toHaveLength(1);
     expect(records[0]?.attributes).toMatchObject({
+      "app.junior.version": JUNIOR_VERSION,
       "deployment.id": "dpl_123",
       "service.version": "git-sha",
     });
diff --git a/packages/junior/tsconfig.build.json b/packages/junior/tsconfig.build.json
index ca568009e..b94167f70 100644
--- a/packages/junior/tsconfig.build.json
+++ b/packages/junior/tsconfig.build.json
@@ -16,6 +16,7 @@
     "src/nitro.ts",
     "src/reporting.ts",
     "src/vercel.ts",
+    "src/version.ts",
     "src/virtual-modules.d.ts"
   ]
 }
diff --git a/packages/junior/tsup.config.ts b/packages/junior/tsup.config.ts
index a1791cd3b..56630a8bf 100644
--- a/packages/junior/tsup.config.ts
+++ b/packages/junior/tsup.config.ts
@@ -17,6 +17,7 @@ export default defineConfig({
     instrumentation: "src/instrumentation.ts",
     nitro: "src/nitro.ts",
     vercel: "src/vercel.ts",
+    version: "src/version.ts",
   },
   format: "esm",
   tsconfig: "tsconfig.build.json",