diff --git a/package.json b/package.json
index e3ad3a76..70de97c3 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "impro",
-  "version": "0.17.108",
+  "version": "0.17.109",
   "type": "module",
   "scripts": {
     "start": "rm -rf \"${BUILD_DIR:-build}\" && NODE_ENV=development eleventy --serve",
diff --git a/src/index.html b/src/index.html
index 7a382bcc..27306289 100644
--- a/src/index.html
+++ b/src/index.html
@@ -52,6 +52,55 @@
       import { enableErrorLogs } from "/js/errorLogs.js";
       import "/js/perf.js";
 
+      // Reload when a newer version is deployed
+      const RELOAD_GUARD_KEY = "version-check-last-reload";
+      const RELOAD_GUARD_MS = 60 * 1000;
+
+      async function fetchDeployedVersion() {
+        try {
+          const response = await fetch("/version.json", { cache: "no-store" });
+          if (!response.ok) {
+            return null;
+          }
+          const data = await response.json();
+          return data.version ?? null;
+        } catch {
+          return null;
+        }
+      }
+
+      async function reloadIfOutdated() {
+        const deployedVersion = await fetchDeployedVersion();
+        if (
+          deployedVersion === null ||
+          deployedVersion === window.env.version
+        ) {
+          return;
+        }
+        // Guard against a reload loop if the server keeps returning stale HTML
+        const lastReload = Number(sessionStorage.getItem(RELOAD_GUARD_KEY));
+        if (lastReload && Date.now() - lastReload < RELOAD_GUARD_MS) {
+          console.warn(
+            `Deployed version ${deployedVersion} differs from running version ${window.env.version}, but a reload was already attempted recently - skipping`,
+          );
+          return;
+        }
+        sessionStorage.setItem(RELOAD_GUARD_KEY, String(Date.now()));
+        window.location.reload();
+      }
+
+      reloadIfOutdated();
+      window.addEventListener("visibilitychange", () => {
+        if (document.visibilityState === "visible") {
+          reloadIfOutdated();
+        }
+      });
+      window.addEventListener("pageshow", (event) => {
+        if (event.persisted) {
+          reloadIfOutdated();
+        }
+      });
+
       const params = new URLSearchParams(window.location.search);
 
       // Dev tools
diff --git a/src/version.11ty.js b/src/version.11ty.js
new file mode 100644
index 00000000..4c4b5276
--- /dev/null
+++ b/src/version.11ty.js
@@ -0,0 +1,11 @@
+export default {
+  data() {
+    return {
+      permalink: "/version.json",
+    };
+  },
+
+  render(data) {
+    return JSON.stringify({ version: data.version }, null, 2);
+  },
+};