diff --git a/.changeset/quiet-dolls-do.md b/.changeset/quiet-dolls-do.md
new file mode 100644
index 0000000000..c933451e9e
--- /dev/null
+++ b/.changeset/quiet-dolls-do.md
@@ -0,0 +1,6 @@
+---
+"@nomiclabs/hardhat-etherscan": patch
+---
+
+- Added Arbitrum Goerli to the list of supported networks.
+- Fixed the Optimism Goerli URLs.
diff --git a/packages/hardhat-etherscan/src/ChainConfig.ts b/packages/hardhat-etherscan/src/ChainConfig.ts
index bf9891ca96..cb02b34c73 100644
--- a/packages/hardhat-etherscan/src/ChainConfig.ts
+++ b/packages/hardhat-etherscan/src/ChainConfig.ts
@@ -96,8 +96,8 @@ export const chainConfig: ChainConfig = {
   optimisticGoerli: {
     chainId: 420,
     urls: {
-      apiURL: "https://api-goerli-optimistic.etherscan.io/api",
-      browserURL: "https://goerli-optimistic.etherscan.io/",
+      apiURL: "https://api-goerli-optimism.etherscan.io/api",
+      browserURL: "https://goerli-optimism.etherscan.io/",
     },
   },
   polygon: {
@@ -121,6 +121,13 @@ export const chainConfig: ChainConfig = {
       browserURL: "https://arbiscan.io/",
     },
   },
+  arbitrumGoerli: {
+    chainId: 421613,
+    urls: {
+      apiURL: "https://api-goerli.arbiscan.io/api",
+      browserURL: "https://goerli.arbiscan.io/",
+    },
+  },
   arbitrumTestnet: {
     chainId: 421611,
     urls: {