diff --git a/.gitignore b/.gitignore
index b79041342bb..0a62cf0b3c9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -54,6 +54,6 @@ allFiredEvents
 .coverage_cache
 .coverage_contracts
 
-# buidler
+# hardhat
 cache
 artifacts
diff --git a/contracts/proxy/README.adoc b/contracts/proxy/README.adoc
index ea6bf3a389d..0a2ecdf7b56 100644
--- a/contracts/proxy/README.adoc
+++ b/contracts/proxy/README.adoc
@@ -13,7 +13,7 @@ An alternative upgradeability mechanism is provided in <<Beacon>>. This pattern,
 
 The {Clones} library provides a way to deploy minimal non-upgradeable proxies for cheap. This can be useful for applications that require deploying many instances of the same contract (for example one per user, or one per task). These instances are designed to be both cheap to deploy, and cheap to call. The drawback being that they are not upgradeable.
 
-CAUTION: Using upgradeable proxies correctly and securely is a difficult task that requires deep knowledge of the proxy pattern, Solidity, and the EVM. Unless you want a lot of low level control, we recommend using the xref:upgrades-plugins::index.adoc[OpenZeppelin Upgrades Plugins] for Truffle and Buidler.
+CAUTION: Using upgradeable proxies correctly and securely is a difficult task that requires deep knowledge of the proxy pattern, Solidity, and the EVM. Unless you want a lot of low level control, we recommend using the xref:upgrades-plugins::index.adoc[OpenZeppelin Upgrades Plugins] for Truffle and Hardhat.
 
 == Core