diff --git a/.changeset/orange-countries-scream.md b/.changeset/orange-countries-scream.md
new file mode 100644
index 000000000..f81c4506c
--- /dev/null
+++ b/.changeset/orange-countries-scream.md
@@ -0,0 +1,5 @@
+---
+'@astrojs/netlify': patch
+---
+
+Allows `-` in hostnames for Netlify Image CDN RegEx
diff --git a/packages/netlify/src/index.ts b/packages/netlify/src/index.ts
index 92f4b8a4d..07d5bf01d 100644
--- a/packages/netlify/src/index.ts
+++ b/packages/netlify/src/index.ts
@@ -46,11 +46,11 @@ export function remotePatternToRegex(
 	if (hostname) {
 		if (hostname.startsWith('**.')) {
 			// match any number of subdomains
-			regexStr += '([a-z0-9]+\\.)*';
+			regexStr += '([a-z0-9-]+\\.)*';
 			hostname = hostname.substring(3);
 		} else if (hostname.startsWith('*.')) {
 			// match one subdomain
-			regexStr += '([a-z0-9]+\\.)?';
+			regexStr += '([a-z0-9-]+\\.)?';
 			hostname = hostname.substring(2); // Remove '*.' from the beginning
 		}
 		// Escape dots in the hostname