diff --git a/hardhat.config.ts b/hardhat.config.ts
index b383ef0..e4911f5 100644
--- a/hardhat.config.ts
+++ b/hardhat.config.ts
@@ -23,7 +23,7 @@ task("accounts", "Prints the list of accounts", async (taskArgs, hre) => {
 // Go to https://hardhat.org/config/ to learn more
 
 const config: HardhatUserConfig = {
-  solidity: "0.7.4",
+  solidity: "0.8.15",
   networks: {
     goerli: {
       url: GOERLI_URL,