diff --git a/src/use4Bytes.ts b/src/use4Bytes.ts
index ea4f28c..8e6ef41 100644
--- a/src/use4Bytes.ts
+++ b/src/use4Bytes.ts
@@ -5,7 +5,7 @@ import {
   TransactionDescription,
 } from "@ethersproject/abi";
 import { BigNumberish } from "@ethersproject/bignumber";
-import useSWR from "swr";
+import useSWRImmutable from "swr/immutable";
 import { RuntimeContext } from "./useRuntime";
 import { fourBytesURL } from "./url";
 
@@ -129,7 +129,7 @@ export const use4Bytes = (
     return fetch4Bytes(assetsURLPrefix, key.slice(2));
   };
 
-  const { data, error } = useSWR<FourBytesEntry | null | undefined>(
+  const { data, error } = useSWRImmutable<FourBytesEntry | null | undefined>(
     rawFourBytes,
     fourBytesFetcher
   );
diff --git a/src/useResolvedAddresses.ts b/src/useResolvedAddresses.ts
index 266a377..adc3819 100644
--- a/src/useResolvedAddresses.ts
+++ b/src/useResolvedAddresses.ts
@@ -1,7 +1,7 @@
 import { useState, useEffect, useContext } from "react";
 import { BaseProvider } from "@ethersproject/providers";
 import { getAddress, isAddress } from "@ethersproject/address";
-import useSWR from "swr";
+import useSWRImmutable from "swr/immutable";
 import { mainResolver } from "./api/address-resolver";
 import { SelectedResolvedName } from "./api/address-resolver/CompositeAddressResolver";
 import { RuntimeContext } from "./useRuntime";
@@ -79,7 +79,7 @@ export const useResolvedAddress = (
     return mainResolver.resolveAddress(provider, address);
   };
 
-  const { data, error } = useSWR(address, fetcher);
+  const { data, error } = useSWRImmutable(address, fetcher);
   if (error) {
     return undefined;
   }