diff --git a/package-lock.json b/package-lock.json
index 453fe0b9..af213cb2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "lit-element",
-  "version": "2.4.0-pre.3",
+  "version": "2.4.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -7661,9 +7661,9 @@
       }
     },
     "lit-html": {
-      "version": "1.3.0-pre.1",
-      "resolved": "https://registry.npmjs.org/lit-html/-/lit-html-1.3.0-pre.1.tgz",
-      "integrity": "sha512-sJY1k6KToY8tSSnua/iSwHAEUgpQqn+qFA5d2k7ef7K2x8gS0aduP6nMp/iXgCI79FiYz6w7h5Tl9T8dJ9GM9g=="
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/lit-html/-/lit-html-1.2.1.tgz",
+      "integrity": "sha512-GSJHHXMGLZDzTRq59IUfL9FCdAlGfqNp/dEa7k7aBaaWD+JKaCjsAk9KYm2V12ItonVaYx2dprN66Zdm1AuBTQ=="
     },
     "load-json-file": {
       "version": "4.0.0",