diff --git a/src/block_explorer.test.ts b/src/block_explorer.test.ts
index 9728986..2e5610b 100644
--- a/src/block_explorer.test.ts
+++ b/src/block_explorer.test.ts
@@ -10,7 +10,7 @@ describe("block_explorer", () => {
   describe("blockExplorerURL", () => {
     it("should properly return the base mainnet block explorer url for empty path", () => {
       expect(blockExplorerURL("", Network.MAINNET)).toBe(
-        "https://blockstream.info"
+        "https://mempool.space"
       );
     });
 
@@ -18,13 +18,13 @@ describe("block_explorer", () => {
       const path =
         "/block/00000000000000000011341d69792271766e4683e29b3ea169eacc59bde10a57";
       expect(blockExplorerURL(path, Network.MAINNET)).toBe(
-        `https://blockstream.info${path}`
+        `https://mempool.space${path}`
       );
     });
 
     it("should properly return the base testnet block explorer url for empty path", () => {
       expect(blockExplorerURL("", Network.TESTNET)).toBe(
-        "https://blockstream.info/testnet"
+        "https://mempool.space/testnet"
       );
     });
 
@@ -32,7 +32,7 @@ describe("block_explorer", () => {
       const path =
         "/tx/4f0ef69f88829bd2f6b7793e32dd8bfcfbc87ddb9a2de3d8ef3f2aabbaff0be3";
       expect(blockExplorerURL(path, Network.TESTNET)).toBe(
-        `https://blockstream.info/testnet${path}`
+        `https://mempool.space/testnet${path}`
       );
     });
   });
@@ -42,7 +42,7 @@ describe("block_explorer", () => {
       const path =
         "/tx/1814a10fb22e9551a17a94a1e68971e19b4f59eaf1689e0af85b97929b3b9ae0";
       expect(blockExplorerAPIURL(path, Network.MAINNET)).toBe(
-        `https://blockstream.info/api${path}`
+        `https://mempool.space/api${path}`
       );
     });
 
@@ -50,7 +50,7 @@ describe("block_explorer", () => {
       const path =
         "/tx/4f0ef69f88829bd2f6b7793e32dd8bfcfbc87ddb9a2de3d8ef3f2aabbaff0be3";
       expect(blockExplorerAPIURL(path, Network.TESTNET)).toBe(
-        `https://blockstream.info/testnet/api${path}`
+        `https://mempool.space/testnet/api${path}`
       );
     });
   });
@@ -60,7 +60,7 @@ describe("block_explorer", () => {
       const path =
         "1814a10fb22e9551a17a94a1e68971e19b4f59eaf1689e0af85b97929b3b9ae0";
       expect(blockExplorerTransactionURL(path, Network.MAINNET)).toBe(
-        `https://blockstream.info/tx/${path}`
+        `https://mempool.space/tx/${path}`
       );
     });
 
@@ -68,7 +68,7 @@ describe("block_explorer", () => {
       const path =
         "4f0ef69f88829bd2f6b7793e32dd8bfcfbc87ddb9a2de3d8ef3f2aabbaff0be3";
       expect(blockExplorerTransactionURL(path, Network.TESTNET)).toBe(
-        `https://blockstream.info/testnet/tx/${path}`
+        `https://mempool.space/testnet/tx/${path}`
       );
     });
   });
@@ -77,14 +77,14 @@ describe("block_explorer", () => {
     it("should properly return the mainnet block explorer address url for a given path", () => {
       const path = "39YqNoLULDpbjmeCTdGJ42DQhrQLzRcMdX";
       expect(blockExplorerAddressURL(path, Network.MAINNET)).toBe(
-        `https://blockstream.info/address/${path}`
+        `https://mempool.space/address/${path}`
       );
     });
 
     it("should properly return the testnet block explorer address url for a given path", () => {
       const path = "2N16oE62ZjAPup985dFBQYAuy5zpDraH7Hk";
       expect(blockExplorerAddressURL(path, Network.TESTNET)).toBe(
-        `https://blockstream.info/testnet/address/${path}`
+        `https://mempool.space/testnet/address/${path}`
       );
     });
   });
diff --git a/src/block_explorer.ts b/src/block_explorer.ts
index 96a063e..ae80037 100644
--- a/src/block_explorer.ts
+++ b/src/block_explorer.ts
@@ -1,6 +1,6 @@
 /**
  * This module provides functions for creating URLs for Blockstream's
- * [block explorer]{@link https://blockstream.info}.
+ * [block explorer]{@link https://mempool.space}.
  *
  * This module does NOT provide implementations of HTTP requests which
  * fetch data from these URLs.
@@ -8,8 +8,8 @@
 
 import { Network } from "./networks";
 
-const BASE_URL_MAINNET = "https://blockstream.info";
-const BASE_URL_TESTNET = "https://blockstream.info/testnet";
+const BASE_URL_MAINNET = "https://mempool.space";
+const BASE_URL_TESTNET = "https://mempool.space/testnet";
 
 function blockExplorerBaseURL(network: Network) {
   return network === Network.TESTNET ? BASE_URL_TESTNET : BASE_URL_MAINNET;