diff --git a/.changeset/slimy-clouds-roll.md b/.changeset/slimy-clouds-roll.md
index 2972209269..f384c395db 100644
--- a/.changeset/slimy-clouds-roll.md
+++ b/.changeset/slimy-clouds-roll.md
@@ -1,7 +1,6 @@
 ---
 'lit-html': patch
 'lit': patch
-'lit-element': patch
 ---
 
 Allow numbers to be used as values in styleMap()
diff --git a/packages/lit-html/src/test/directives/style-map_test.ts b/packages/lit-html/src/test/directives/style-map_test.ts
index e65c318a93..fbe5d400bc 100644
--- a/packages/lit-html/src/test/directives/style-map_test.ts
+++ b/packages/lit-html/src/test/directives/style-map_test.ts
@@ -89,6 +89,7 @@ suite('styleMap', () => {
     assert.equal(el.style.marginTop, '2px');
     assert.equal(el.style.paddingBottom, '4px');
     assert.equal(el.style.opacity, '0.5');
+    assert.equal(el.style.zIndex, '10');
     renderStyleMap({
       marginTop: '4px',
       paddingBottom: '8px',
diff --git a/packages/tests/src/web-test-runner.config.ts b/packages/tests/src/web-test-runner.config.ts
index dcbf0b8613..7873df15f4 100644
--- a/packages/tests/src/web-test-runner.config.ts
+++ b/packages/tests/src/web-test-runner.config.ts
@@ -24,8 +24,8 @@ const browserPresets = {
   // Default set of Playwright browsers to test when running locally.
   local: [
     'chromium', // keep browsers on separate lines
-    // 'firefox', // to make it easier to comment out
-    // 'webkit', // individual browsers
+    'firefox', // to make it easier to comment out
+    'webkit', // individual browsers
   ],
 
   // Browsers to test during automated continuous integration.