diff --git a/.changeset/legal-jeans-stick.md b/.changeset/legal-jeans-stick.md
new file mode 100644
index 000000000..099dc6daf
--- /dev/null
+++ b/.changeset/legal-jeans-stick.md
@@ -0,0 +1,5 @@
+---
+'@relayprotocol/relay-kit-ui': patch
+---
+
+Phantom support – add monad and hyperevm
diff --git a/packages/ui/src/constants/walletCompatibility.ts b/packages/ui/src/constants/walletCompatibility.ts
index 1616fcfc3..d79333288 100644
--- a/packages/ui/src/constants/walletCompatibility.ts
+++ b/packages/ui/src/constants/walletCompatibility.ts
@@ -1,5 +1,5 @@
 export const WalletChainRestricted: Record<string, number[]> = {
-  phantom: [1, 8453, 792703809, 137, 8253038, 101, 10143],
+  phantom: [1, 8453, 792703809, 137, 8253038, 101, 10143, 143, 999],
   backpack: [1, 8453, 137, 42161, 10, 10143, 80094, 9286185, 792703809],
   magiceden: [
     1, 137, 8453, 33139, 8253038, 792703809, 1329, 2741, 42161, 80094, 56, 43114