diff --git a/apps/lit/package.json b/apps/lit/package.json
index 6176aea..5464035 100644
--- a/apps/lit/package.json
+++ b/apps/lit/package.json
@@ -22,7 +22,7 @@
   "author": "The Polymer Authors",
   "license": "BSD-3-Clause",
   "dependencies": {
-    "lit-element": "^2.2.1"
+    "lit-element": "^3.0.0"
   },
   "devDependencies": {
     "@11ty/eleventy": "^2.0.0",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index d29b6a2..6ad1b2d 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -33,7 +33,7 @@ importers:
       karma-chai: ^0.1.0
       karma-mocha: ^2.0.0
       lit-analyzer: ^1.1.9
-      lit-element: ^2.2.1
+      lit-element: ^3.0.0
       lit-tsparticles: ^2.9.3
       mocha: ^10.0.0
       prettier: ^2.0.0
@@ -47,7 +47,7 @@ importers:
       typescript: ^4.9.4
       web-component-analyzer: ^1.0.0
     dependencies:
-      lit-element: 2.5.1
+      lit-element: 3.2.2
     devDependencies:
       '@11ty/eleventy': 2.0.0
       '@11ty/eleventy-plugin-syntaxhighlight': 4.2.0
@@ -3355,10 +3355,6 @@ packages:
     resolution: {integrity: sha512-/fvYntiO1GeICvqbQ3doGDIP97vWmvFt83GKguJ6prmQM2iXZfFcq6YE8KteFyRtX2/h5Hf91BYvPodJKFYv5Q==}
     dev: true
 
-  /@types/mocha/5.2.7:
-    resolution: {integrity: sha512-NYrtPht0wGzhwe9+/idPaBB+TqkY9AhTvOLMkThm0IoEfLaiVQZwBwyJ5puCkO3AUCWrmcoePjp2mbFocKy4SQ==}
-    dev: true
-
   /@types/node/14.18.36:
     resolution: {integrity: sha512-FXKWbsJ6a1hIrRxv+FoukuHnGTgEzKYGi7kilfMae96AL9UNkPFNWJEEYWzdRI9ooIkbr4AKldyuSTLql06vLQ==}
     dev: false
@@ -8262,22 +8258,12 @@ packages:
       - supports-color
     dev: true
 
-  /lit-element/2.5.1:
-    resolution: {integrity: sha512-ogu7PiJTA33bEK0xGu1dmaX5vhcRjBXCFexPja0e7P7jqLhTpNKYRPmE+GmiCaRVAbiQKGkUgkh/i6+bh++dPQ==}
-    dependencies:
-      lit-html: 1.4.1
-    dev: false
-
   /lit-element/3.2.2:
     resolution: {integrity: sha512-6ZgxBR9KNroqKb6+htkyBwD90XGRiqKDHVrW/Eh0EZ+l+iC+u+v+w3/BA5NGi4nizAVHGYvQBHUDuSmLjPp7NQ==}
     dependencies:
       '@lit/reactive-element': 1.5.0
       lit-html: 2.5.0
 
-  /lit-html/1.4.1:
-    resolution: {integrity: sha512-B9btcSgPYb1q4oSOb/PrOT6Z/H+r6xuNzfH4lFli/AWhYwdtrgQkQWBbIc6mdnf6E2IL3gDXdkkqNktpU0OZQA==}
-    dev: false
-
   /lit-html/2.5.0:
     resolution: {integrity: sha512-bLHosg1XL3JRUcKdSVI0sLCs0y1wWrj2sqqAN3cZ7bDDPNgmDHH29RV48x6Wz3ZmkxIupaE+z7uXSZ/pXWAO1g==}
     dependencies: