diff --git a/.github/workflows/snapshot.yml b/.github/workflows/snapshot.yml
index 3f37bf5..6e71245 100644
--- a/.github/workflows/snapshot.yml
+++ b/.github/workflows/snapshot.yml
@@ -29,6 +29,9 @@ jobs:
       - name: Install dependencies
         run: npm install
 
+      - name: Run unit tests
+        run: npm run test:unit
+
       - name: Build project
         run: npm run build
 
diff --git a/.gitignore b/.gitignore
index 403adbc..5723c84 100644
--- a/.gitignore
+++ b/.gitignore
@@ -21,3 +21,5 @@ pnpm-debug.log*
 *.njsproj
 *.sln
 *.sw?
+
+.worktrees/
diff --git a/agents.md b/agents.md
index d479e42..d4de165 100644
--- a/agents.md
+++ b/agents.md
@@ -16,8 +16,11 @@ Browser-based UI for controlling a Freeshard. Users manage apps, pair devices, c
 npm run serve     # Dev server with hot-reload
 npm run build     # Production build
 npm run lint      # ESLint
+npm run test:unit # Jest unit tests
 ```
 
+Unit tests run in CI on every push and pull request, before the build.
+
 ## Project Structure
 
 ```
diff --git a/justfile b/justfile
index de05317..ce3dc31 100644
--- a/justfile
+++ b/justfile
@@ -10,9 +10,15 @@ default:
 _set-version-files version:
     #!/usr/bin/env python3
     import json
-    with open('package.json') as f:
-        pkg = json.load(f)
-    pkg['version'] = '{{version}}'
-    with open('package.json', 'w') as f:
-        json.dump(pkg, f, indent=2)
-        f.write('\n')
+    for path, keys in (('package.json', (('version',),)),
+                       ('package-lock.json', (('version',), ('packages', '', 'version')))):
+        with open(path) as f:
+            doc = json.load(f)
+        for key in keys:
+            node = doc
+            for step in key[:-1]:
+                node = node[step]
+            node[key[-1]] = '{{version}}'
+        with open(path, 'w') as f:
+            json.dump(doc, f, indent=2)
+            f.write('\n')
diff --git a/package-lock.json b/package-lock.json
index 6da0950..5363770 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "web-terminal",
-  "version": "0.38.1",
+  "version": "0.40.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "web-terminal",
-      "version": "0.38.1",
+      "version": "0.40.0",
       "dependencies": {
         "axios": ">=1.8.2",
         "bootstrap": "^4.5.3",