diff --git a/api/src/app/routes/version/index.ts b/api/src/app/routes/version/index.ts
new file mode 100644
index 0000000..2d7e1ab
--- /dev/null
+++ b/api/src/app/routes/version/index.ts
@@ -0,0 +1,30 @@
+import type { FastifyInstance } from "fastify";
+import { readFileSync } from "fs";
+import { join } from "path";
+
+interface PackageJson {
+  version: string;
+}
+
+let cachedVersion: string | null = null;
+
+function getVersion(): string {
+  if (cachedVersion) {
+    return cachedVersion;
+  }
+
+  try {
+    const packageJsonPath = join(process.cwd(), "package.json");
+    const packageJson = JSON.parse(readFileSync(packageJsonPath, "utf-8")) as PackageJson;
+    cachedVersion = packageJson.version;
+    return cachedVersion;
+  } catch {
+    return "unknown";
+  }
+}
+
+export default async function (app: FastifyInstance): Promise<void> {
+  app.get("/", async (_request, reply) => {
+    reply.send({ version: getVersion() });
+  });
+}
diff --git a/apps/frontend/src/app/components/header/header.component.ts b/apps/frontend/src/app/components/header/header.component.ts
index deacb42..7dad4e8 100644
--- a/apps/frontend/src/app/components/header/header.component.ts
+++ b/apps/frontend/src/app/components/header/header.component.ts
@@ -4,10 +4,11 @@
  * @author Naomi Carrigan
  */
 
-import { Component, inject } from '@angular/core';
+import { Component, inject, signal, OnInit } from '@angular/core';
 import { CommonModule } from '@angular/common';
 import { RouterModule } from '@angular/router';
 import { AuthService } from '../../services/auth.service';
+import { ApiService } from '../../services/api.service';
 
 @Component({
   selector: 'app-header',
@@ -18,6 +19,9 @@ import { AuthService } from '../../services/auth.service';
       <nav class="navbar">
         <div class="nav-brand">
           <h1><a routerLink="/">Naomi's Library</a></h1>
+          @if (version()) {
+            <span class="version">v{{ version() }}</span>
+          }
         </div>
 
         <ul class="nav-links">
@@ -77,6 +81,13 @@ import { AuthService } from '../../services/auth.service';
       font-weight: 600;
     }
 
+    .version {
+      font-size: 0.7rem;
+      color: var(--witch-lavender);
+      opacity: 0.8;
+      margin-left: 0.5rem;
+    }
+
     .nav-links {
       display: flex;
       list-style: none;
@@ -175,8 +186,17 @@ import { AuthService } from '../../services/auth.service';
     }
   `]
 })
-export class HeaderComponent {
+export class HeaderComponent implements OnInit {
   authService = inject(AuthService);
+  private apiService = inject(ApiService);
+  version = signal<string | null>(null);
+
+  ngOnInit() {
+    this.apiService.get<{ version: string }>('/version').subscribe({
+      next: (response) => this.version.set(response.version),
+      error: () => this.version.set(null)
+    });
+  }
 
   login() {
     this.authService.login();