diff --git a/.changeset/kind-apricots-shave.md b/.changeset/kind-apricots-shave.md
new file mode 100644
index 0000000..eead541
--- /dev/null
+++ b/.changeset/kind-apricots-shave.md
@@ -0,0 +1,6 @@
+---
+'astro-vtbot': patch
+---
+
+Handles "!important" correctly when used with view-transition-names.  
+
diff --git a/components/css.ts b/components/css.ts
index 98a66e3..50cb789 100644
--- a/components/css.ts
+++ b/components/css.ts
@@ -83,7 +83,9 @@ export function elementsWithPropertyInStylesheet(
 		definitions.set(sheet, set);
 		const text = (owner?.textContent ?? '').replace(/@supports[^;{]+/g, '');
 		const matches = text.matchAll(new RegExp(`${property}:\\s*([^;}]*)`, 'gu'));
-		[...matches].forEach((match) => set.add(decode(property, match[1]!)));
+		[...matches].forEach((match) =>
+			set.add(decode(property, match[1]!.replace(/\s*!important\s*$/, '')))
+		);
 	});
 
 	walkSheets([...doc.styleSheets], undefined, (rule) => {
diff --git a/package-lock.json b/package-lock.json
index 44ccb2d..26b8e8d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "astro-vtbot",
-  "version": "1.9.2",
+  "version": "1.9.3",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "astro-vtbot",
-      "version": "1.9.2",
+      "version": "1.9.3",
       "license": "ISC",
       "dependencies": {
         "@vtbag/element-crossing": "^1.0.1",
@@ -20,7 +20,7 @@
         "@playwright/test": "^1.47.1",
         "@types/dom-view-transitions": "^1.0.5",
         "@types/node": "^22.5.5",
-        "astro": "^4.15.5",
+        "astro": "^4.15.8",
         "prettier": "^3.3.3",
         "prettier-plugin-astro": "^0.14.1",
         "typescript": "^5.6.2"
@@ -2194,9 +2194,9 @@
       }
     },
     "node_modules/astro": {
-      "version": "4.15.5",
-      "resolved": "https://registry.npmjs.org/astro/-/astro-4.15.5.tgz",
-      "integrity": "sha512-zcHXpRav0dtYpddxoGMDN7A7SKrGL9wsu5IxLjqCcZhylfZ/5mfLfoGYnSg7aFwuAleUXP66lyfY+GDbFTbF2w==",
+      "version": "4.15.8",
+      "resolved": "https://registry.npmjs.org/astro/-/astro-4.15.8.tgz",
+      "integrity": "sha512-pdXjtRF6O1xChiPAUF32R7oVRTW7AK1/Oy/JqPNhLfbelO0l6C7cLdSEuSLektwOEnMhOVXqccetjBs7HPaoxA==",
       "dev": true,
       "dependencies": {
         "@astrojs/compiler": "^2.10.3",
diff --git a/package.json b/package.json
index ee675a2..ec5a8c8 100644
--- a/package.json
+++ b/package.json
@@ -86,7 +86,7 @@
     "@playwright/test": "^1.47.1",
     "@types/dom-view-transitions": "^1.0.5",
     "@types/node": "^22.5.5",
-    "astro": "^4.15.5",
+    "astro": "^4.15.8",
     "prettier": "^3.3.3",
     "prettier-plugin-astro": "^0.14.1",
     "typescript": "^5.6.2"