diff --git a/client/package-lock.json b/client/package-lock.json
index 2db43dc5..d2952ad0 100644
--- a/client/package-lock.json
+++ b/client/package-lock.json
@@ -11,6 +11,7 @@
         "@girder/oauth-client": "^0.7.7",
         "@mdi/font": "^6.5.95",
         "@sentry/vue": "^6.17.6",
+        "@types/idle-js": "^1.2.1",
         "@types/jest": "^27.0.1",
         "@typescript-eslint/eslint-plugin": "^4.33.0",
         "@typescript-eslint/parser": "^4.0.0",
@@ -21,7 +22,7 @@
         "direct-vuex": "^0.12.1",
         "django-s3-file-field": "^0.3.0",
         "gl-matrix": "^3.4.3",
-        "idle-vue": "^2.0.5",
+        "idle-js": "^1.2.0",
         "itk": "14.0.0",
         "lodash": "^4.17.21",
         "mousetrap": "github:scottwittenburg/mousetrap#fix-listener-leak",
@@ -1570,6 +1571,23 @@
         "@babel/core": "^7.0.0-0"
       }
     },
+    "node_modules/@babel/polyfill": {
+      "version": "7.12.1",
+      "resolved": "https://registry.npmjs.org/@babel/polyfill/-/polyfill-7.12.1.tgz",
+      "integrity": "sha512-X0pi0V6gxLi6lFZpGmeNa4zxtwEmCs42isWLNjZZDE0Y8yVfgu0T2OAHlzBbdYlqbW/YXVvoBHpATEM+goCj8g==",
+      "deprecated": "🚨 This package has been deprecated in favor of separate inclusion of a polyfill and regenerator-runtime (when needed). See the @babel/polyfill docs (https://babeljs.io/docs/en/babel-polyfill) for more information.",
+      "dependencies": {
+        "core-js": "^2.6.5",
+        "regenerator-runtime": "^0.13.4"
+      }
+    },
+    "node_modules/@babel/polyfill/node_modules/core-js": {
+      "version": "2.6.12",
+      "resolved": "https://registry.npmjs.org/core-js/-/core-js-2.6.12.tgz",
+      "integrity": "sha512-Kb2wC0fvsWfQrgk8HU5lW6U/Lcs8+9aaYcy4ZFc6DDlo4nZ7n70dEgE5rtR0oG6ufKDUnrwfWL1mXR5ljDatrQ==",
+      "deprecated": "core-js@<3.4 is no longer maintained and not recommended for usage due to the number of issues. Because of the V8 engine whims, feature detection in old core-js versions could cause a slowdown up to 100x even if nothing is polyfilled. Please, upgrade your dependencies to the actual version of core-js.",
+      "hasInstallScript": true
+    },
     "node_modules/@babel/preset-env": {
       "version": "7.16.11",
       "resolved": "https://registry.npmjs.org/@babel/preset-env/-/preset-env-7.16.11.tgz",
@@ -2323,6 +2341,11 @@
         "@types/node": "*"
       }
     },
+    "node_modules/@types/idle-js": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/@types/idle-js/-/idle-js-1.2.1.tgz",
+      "integrity": "sha512-lOB1BK2Z96LZQCVTUS8mNdUVsFevB1rhU6ZyA9xZlX0N406nvstHyV702AoZygFuEnTa+aN8ShF1nQ/NH5xlUg=="
+    },
     "node_modules/@types/jest": {
       "version": "27.4.1",
       "resolved": "https://registry.npmjs.org/@types/jest/-/jest-27.4.1.tgz",
@@ -10513,20 +10536,11 @@
       }
     },
     "node_modules/idle-js": {
-      "version": "0.1.3",
-      "resolved": "https://registry.npmjs.org/idle-js/-/idle-js-0.1.3.tgz",
-      "integrity": "sha512-Hvd+OLMUWfVJUv/HoX7wtBgPwx2OdcEd2TzXcBQJyuINXcf7Ig2SgxRMuq2wZNkarf/+DrzV7NxwjKcexIfWBg=="
-    },
-    "node_modules/idle-vue": {
-      "version": "2.0.5",
-      "resolved": "https://registry.npmjs.org/idle-vue/-/idle-vue-2.0.5.tgz",
-      "integrity": "sha1-MA48zZWBcMTX76fMmuzoYHi+9XY=",
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/idle-js/-/idle-js-1.2.0.tgz",
+      "integrity": "sha512-ssRtcpcg8WMvXHOkNaq04NXftpuVR+npN0ke8d7EDSxoPyCxcpeZv1EkKft9KmB/v/Q1Q47z89d/9+5VKkvpxw==",
       "dependencies": {
-        "idle-js": "^0.1.3"
-      },
-      "engines": {
-        "node": ">= 4.0.0",
-        "npm": ">= 3.0.0"
+        "@babel/polyfill": "^7.2.5"
       }
     },
     "node_modules/ieee754": {
@@ -20491,6 +20505,22 @@
         "@babel/helper-plugin-utils": "^7.16.7"
       }
     },
+    "@babel/polyfill": {
+      "version": "7.12.1",
+      "resolved": "https://registry.npmjs.org/@babel/polyfill/-/polyfill-7.12.1.tgz",
+      "integrity": "sha512-X0pi0V6gxLi6lFZpGmeNa4zxtwEmCs42isWLNjZZDE0Y8yVfgu0T2OAHlzBbdYlqbW/YXVvoBHpATEM+goCj8g==",
+      "requires": {
+        "core-js": "^2.6.5",
+        "regenerator-runtime": "^0.13.4"
+      },
+      "dependencies": {
+        "core-js": {
+          "version": "2.6.12",
+          "resolved": "https://registry.npmjs.org/core-js/-/core-js-2.6.12.tgz",
+          "integrity": "sha512-Kb2wC0fvsWfQrgk8HU5lW6U/Lcs8+9aaYcy4ZFc6DDlo4nZ7n70dEgE5rtR0oG6ufKDUnrwfWL1mXR5ljDatrQ=="
+        }
+      }
+    },
     "@babel/preset-env": {
       "version": "7.16.11",
       "resolved": "https://registry.npmjs.org/@babel/preset-env/-/preset-env-7.16.11.tgz",
@@ -21125,6 +21155,11 @@
         "@types/node": "*"
       }
     },
+    "@types/idle-js": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/@types/idle-js/-/idle-js-1.2.1.tgz",
+      "integrity": "sha512-lOB1BK2Z96LZQCVTUS8mNdUVsFevB1rhU6ZyA9xZlX0N406nvstHyV702AoZygFuEnTa+aN8ShF1nQ/NH5xlUg=="
+    },
     "@types/jest": {
       "version": "27.4.1",
       "resolved": "https://registry.npmjs.org/@types/jest/-/jest-27.4.1.tgz",
@@ -27522,16 +27557,11 @@
       }
     },
     "idle-js": {
-      "version": "0.1.3",
-      "resolved": "https://registry.npmjs.org/idle-js/-/idle-js-0.1.3.tgz",
-      "integrity": "sha512-Hvd+OLMUWfVJUv/HoX7wtBgPwx2OdcEd2TzXcBQJyuINXcf7Ig2SgxRMuq2wZNkarf/+DrzV7NxwjKcexIfWBg=="
-    },
-    "idle-vue": {
-      "version": "2.0.5",
-      "resolved": "https://registry.npmjs.org/idle-vue/-/idle-vue-2.0.5.tgz",
-      "integrity": "sha1-MA48zZWBcMTX76fMmuzoYHi+9XY=",
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/idle-js/-/idle-js-1.2.0.tgz",
+      "integrity": "sha512-ssRtcpcg8WMvXHOkNaq04NXftpuVR+npN0ke8d7EDSxoPyCxcpeZv1EkKft9KmB/v/Q1Q47z89d/9+5VKkvpxw==",
       "requires": {
-        "idle-js": "^0.1.3"
+        "@babel/polyfill": "^7.2.5"
       }
     },
     "ieee754": {
diff --git a/client/package.json b/client/package.json
index 1bf93da3..e91b5fb5 100644
--- a/client/package.json
+++ b/client/package.json
@@ -11,6 +11,7 @@
     "@girder/oauth-client": "^0.7.7",
     "@mdi/font": "^6.5.95",
     "@sentry/vue": "^6.17.6",
+    "@types/idle-js": "^1.2.1",
     "@types/jest": "^27.0.1",
     "@typescript-eslint/eslint-plugin": "^4.33.0",
     "@typescript-eslint/parser": "^4.0.0",
@@ -21,7 +22,7 @@
     "direct-vuex": "^0.12.1",
     "django-s3-file-field": "^0.3.0",
     "gl-matrix": "^3.4.3",
-    "idle-vue": "^2.0.5",
+    "idle-js": "^1.2.0",
     "itk": "14.0.0",
     "lodash": "^4.17.21",
     "mousetrap": "github:scottwittenburg/mousetrap#fix-listener-leak",
diff --git a/client/src/components/TimeoutDialog.vue b/client/src/components/TimeoutDialog.vue
index 3226727c..bbe482f3 100644
--- a/client/src/components/TimeoutDialog.vue
+++ b/client/src/components/TimeoutDialog.vue
@@ -1,104 +1,97 @@
-<script>
-import {
-  mapState, mapActions, mapMutations,
-} from 'vuex';
+<script lang="ts">
+import IdleJS from 'idle-js';
 import djangoRest from '@/django';
+import store from '@/store';
+import {
+  computed, defineComponent, ref,
+} from '@vue/composition-api';
 
-const initMinutes = 1;
-const initSeconds = 59;
+const warningDuration = 2 * 60 * 1000; // the warning box will pop up for 2 minutes
+// The server-side session token lasts 30 minutes
+const sessionTimeout = 30 * 60 * 1000;
+// Log out after 15 minutes if the user is away from keyboard
+const idleTimeout = 15 * 60 * 1000;
 
-export default {
+export default defineComponent({
   name: 'TimeoutDialog',
-  data: () => ({
-    show: false,
-    minutes: initMinutes,
-    seconds: initSeconds,
-  }),
-  computed: {
-    ...mapState(['actionTimeout']),
-    minutesStr() {
-      switch (this.minutes) {
-        case 0:
-          return '';
-        case 1:
-          return '1 minute';
-        default:
-          return `${this.minutes} minutes`;
-      }
-    },
-    secondsStr() {
-      switch (this.seconds) {
-        case 0:
-          return '';
-        case 1:
-          return '1 second';
-        default:
-          return `${this.seconds} seconds`;
-      }
-    },
-    done() {
-      return this.minutes <= 0 && this.seconds <= 0;
-    },
-  },
-  watch: {
-    // vue-idle: Adds a computed value 'isAppIdle' to all Vue objects
-    isAppIdle(idle) {
-      if (idle && !this.show) {
-        this.show = true;
-        this.decrement();
-      }
-    },
-    actionTimeout(timeout) {
-      if (timeout && !this.show) {
-        this.show = true;
-        this.decrement();
-      }
-    },
-  },
-  created() {
-    this.startActionTimer();
-  },
-  methods: {
-    ...mapActions(['startActionTimer', 'resetActionTimer']),
-    ...mapMutations(['setActionTimeout']),
-    reset() {
-      // reset dialog
-      this.show = false;
-      this.minutes = initMinutes;
-      this.seconds = initSeconds;
+  setup() {
+    const show = ref(false);
+    const idleWarningTriggered = ref(false);
+    const idleStartTime = ref(0);
+    const timeRemaining = ref(0);
+    const timeRemainingStr = computed(() => {
+      const secondsRemaining = Math.floor(timeRemaining.value / 1000);
+      const minutes = Math.floor(secondsRemaining / 60);
+      const seconds = String(Math.floor(secondsRemaining % 60)).padStart(2, '0');
+      return `${minutes}:${seconds}`;
+    });
 
-      // reset no-action timer
-      this.setActionTimeout(false);
-      this.resetActionTimer();
-    },
-    logout() {
-      this.minutes = 0;
-      this.seconds = 0;
-    },
-    reload() {
-      this.$router.go();
-    },
-    decrement() {
-      if (this.show) {
-        setTimeout(() => {
-          this.seconds -= 1;
+    const lastApiRequestTime = computed(() => store.state.lastApiRequestTime);
 
-          if (this.minutes <= 0 && this.seconds <= 0) {
-            djangoRest.logout();
-            return;
-          }
+    const reset = () => {
+      // Send a request to refresh the server token
+      // Not awaited since we don't actually care about the result
+      djangoRest.projects();
 
-          if (this.seconds === 0) {
-            this.minutes -= 1;
-            this.seconds = initSeconds;
-          }
+      // reset dialog
+      show.value = false;
+      idleWarningTriggered.value = false;
+    };
+    const logout = async () => {
+      await djangoRest.logout();
+      // This will redirect to the login page
+      await djangoRest.login();
+    };
+
+    // Watch for an absence of user interaction
+    const idle = new IdleJS({
+      idle: idleTimeout - warningDuration,
+      onIdle() {
+        if (!show.value) {
+          idleWarningTriggered.value = true;
+          idleStartTime.value = Date.now();
+        }
+      },
+    });
+    idle.start();
 
-          this.decrement();
-        }, 1000);
+    // This function calls itself after 1 second to check if the session has expired and to keep
+    // the countdown timer up to date.
+    const updateCountdown = () => {
+      const now = Date.now();
+      const sessionTimeRemaining = lastApiRequestTime.value + sessionTimeout - now;
+      if (idleWarningTriggered.value) {
+        // If the user is idle, we also need to consider the idle warning
+        const idleTimeRemaining = idleStartTime.value + warningDuration - now;
+        timeRemaining.value = Math.min(sessionTimeRemaining, idleTimeRemaining);
+      } else {
+        timeRemaining.value = sessionTimeRemaining;
+      }
+      // The timer has expired, log out
+      if (timeRemaining.value <= 0) {
+        logout();
       }
-    },
+      // Show the warning if the time remaining is getting close to 0
+      show.value = timeRemaining.value < warningDuration;
+      setTimeout(updateCountdown, 1000);
+    };
+    updateCountdown();
+    // TODO when the webpack dev server reloads, it doesn't stop this setTimeout loop.
+    // The component that the old loop was servicing no longer exists so it doesn't actually matter,
+    // but it would be nice to garbage collect it.
+
+    return {
+      show,
+      idleWarningTriggered,
+      timeRemaining,
+      timeRemainingStr,
+      reset,
+      logout,
+      sessionTimeout,
+      idleTimeout,
+    };
   },
-};
+});
 </script>
 
 <template>
@@ -113,13 +106,15 @@ export default {
       </v-card-title>
 
       <v-card-text class="py-4 px-6">
-        <p v-if="done">
-          You have been logged out due to inactivity. Refresh the page to log
-          back in
+        <p v-if="idleWarningTriggered">
+          You have been idle for almost {{ Math.floor(idleTimeout / (60 * 1000)) }} minutes.
         </p>
         <p v-else>
-          You have been inactive for almost 30 minutes. Your session will
-          automatically terminate in {{ minutesStr }} {{ secondsStr }}
+          You have not made any network requests in almost
+          {{ Math.floor(sessionTimeout / (60 * 1000)) }} minutes.
+        </p>
+        <p>
+          Your session will automatically terminate in {{ timeRemainingStr }}
         </p>
       </v-card-text>
 
@@ -128,7 +123,6 @@ export default {
       <v-card-actions>
         <v-spacer />
         <v-btn
-          v-if="!done"
           color="primary"
           text
           @click="reset"
@@ -136,21 +130,12 @@ export default {
           Continue Session
         </v-btn>
         <v-btn
-          v-if="!done"
           color="secondary"
           text
           @click="logout"
         >
           Logout
         </v-btn>
-        <v-btn
-          v-if="done"
-          color="primary"
-          text
-          @click="reload"
-        >
-          Reload
-        </v-btn>
       </v-card-actions>
     </v-card>
   </v-dialog>
diff --git a/client/src/django.ts b/client/src/django.ts
index ccf7709a..3715e816 100644
--- a/client/src/django.ts
+++ b/client/src/django.ts
@@ -44,7 +44,7 @@ const djangoClient = {
     // mark user not-idle
     apiClient.interceptors.request.use(async (config) => {
       await oauthClient.maybeRestoreLogin();
-      await store.dispatch.resetActionTimer();
+      await store.commit.updateLastApiRequestTime();
 
       return config;
     }, (error) => Promise.reject(error));
diff --git a/client/src/main.ts b/client/src/main.ts
index d0ee53b7..3c8150d7 100644
--- a/client/src/main.ts
+++ b/client/src/main.ts
@@ -4,7 +4,6 @@ import Vuetify from 'vuetify';
 
 import AsyncComputed from 'vue-async-computed';
 import config from 'itk/itkConfig';
-import IdleVue from 'idle-vue';
 import * as Sentry from '@sentry/vue';
 import App from './App.vue';
 import router from './router';
@@ -29,7 +28,6 @@ Vue.use(Vuetify);
 Vue.use(VueCompositionAPI);
 Vue.use(AsyncComputed);
 Vue.use(vMousetrap);
-Vue.use(IdleVue, { store: store.original, idleTime: 900000 }); // 15 minutes inactive timeout
 
 const vuetify = new Vuetify();
 
diff --git a/client/src/store/index.ts b/client/src/store/index.ts
index 137fd304..6943fd54 100644
--- a/client/src/store/index.ts
+++ b/client/src/store/index.ts
@@ -33,8 +33,6 @@ const poolSize = Math.floor(navigator.hardwareConcurrency / 2) || 2;
 let taskRunId = -1;
 let savedWorker = null;
 
-const actiontime = 28 * 60 * 1000; // 28 minute no action timeout + 2 minutes to take action
-
 function shrinkProxyManager(proxyManager) {
   proxyManager.getViews().forEach((view) => {
     view.setContainer(null);
@@ -320,8 +318,7 @@ const {
   state: {
     ...initState,
     workerPool: new WorkerPool(poolSize, poolFunction),
-    actionTimer: null,
-    actionTimeout: false,
+    lastApiRequestTime: Date.now(),
   },
   getters: {
     wholeState(state) {
@@ -479,8 +476,8 @@ const {
     removeScreenshot(state, screenshot) {
       state.screenshots.splice(state.screenshots.indexOf(screenshot), 1);
     },
-    setActionTimeout(state, value) {
-      state.actionTimeout = value;
+    updateLastApiRequestTime(state) {
+      state.lastApiRequestTime = Date.now();
     },
     setLoadingFrame(state, value) {
       state.loadingFrame = value;
@@ -836,15 +833,6 @@ const {
         );
       }
     },
-    startActionTimer({ state, commit }) {
-      state.actionTimer = setTimeout(() => {
-        commit('setActionTimeout', true);
-      }, actiontime);
-    },
-    resetActionTimer({ state, dispatch }) {
-      clearTimeout(state.actionTimer);
-      dispatch('startActionTimer');
-    },
   },
 });