diff --git a/test/wasm/index.js b/test/wasm/index.js
index 29d86839d..fce5753c8 100755
--- a/test/wasm/index.js
+++ b/test/wasm/index.js
@@ -31,6 +31,10 @@ const childProcess = require('child_process');
     // Since this is testing only, we use the default in-memory FS
     global._go_sqlite.FS.mkdir("/idb");
 
+    // WebSocket
+    const WebSocket = require('isomorphic-ws');
+    global.WebSocket = WebSocket;
+
     // Load the generic Go Wasm exec helper inline to trigger built-in run call
     // This approach avoids copying `wasm_exec.js` into the repo, which is nice
     // to aim for since it can differ between Go versions.
diff --git a/test/wasm/package-lock.json b/test/wasm/package-lock.json
index e7711deda..f26d55ab7 100644
--- a/test/wasm/package-lock.json
+++ b/test/wasm/package-lock.json
@@ -5,7 +5,17 @@
   "packages": {
     "": {
       "dependencies": {
-        "sql.js": "github:neilalexander/sql.js#252a72bf57b0538cbd49bbd6f70af71e516966ae"
+        "isomorphic-ws": "^4.0.1",
+        "sql.js": "github:neilalexander/sql.js#252a72bf57b0538cbd49bbd6f70af71e516966ae",
+        "ws": "^7.5.2"
+      }
+    },
+    "node_modules/isomorphic-ws": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/isomorphic-ws/-/isomorphic-ws-4.0.1.tgz",
+      "integrity": "sha512-BhBvN2MBpWTaSHdWRb/bwdZJ1WaehQ2L1KngkCkfLUGF0mAWAT1sQUQacEmQ0jXkFw/czDXPNQSL5u2/Krsz1w==",
+      "peerDependencies": {
+        "ws": "*"
       }
     },
     "node_modules/sql.js": {
@@ -13,13 +23,45 @@
       "resolved": "git+ssh://git@github.com/neilalexander/sql.js.git#252a72bf57b0538cbd49bbd6f70af71e516966ae",
       "integrity": "sha512-EFYI/yMoQ1U08nZxQOZ7+4S0nOpKF45EVoWGef8L1kvSCMP3B3xSzwZeOmoF2tBVpbMssAgHEz43cf0ZulRDSQ==",
       "license": "MIT"
+    },
+    "node_modules/ws": {
+      "version": "7.5.2",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-7.5.2.tgz",
+      "integrity": "sha512-lkF7AWRicoB9mAgjeKbGqVUekLnSNO4VjKVnuPHpQeOxZOErX6BPXwJk70nFslRCEEA8EVW7ZjKwXaP9N+1sKQ==",
+      "engines": {
+        "node": ">=8.3.0"
+      },
+      "peerDependencies": {
+        "bufferutil": "^4.0.1",
+        "utf-8-validate": "^5.0.2"
+      },
+      "peerDependenciesMeta": {
+        "bufferutil": {
+          "optional": true
+        },
+        "utf-8-validate": {
+          "optional": true
+        }
+      }
     }
   },
   "dependencies": {
+    "isomorphic-ws": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/isomorphic-ws/-/isomorphic-ws-4.0.1.tgz",
+      "integrity": "sha512-BhBvN2MBpWTaSHdWRb/bwdZJ1WaehQ2L1KngkCkfLUGF0mAWAT1sQUQacEmQ0jXkFw/czDXPNQSL5u2/Krsz1w==",
+      "requires": {}
+    },
     "sql.js": {
       "version": "git+ssh://git@github.com/neilalexander/sql.js.git#252a72bf57b0538cbd49bbd6f70af71e516966ae",
       "integrity": "sha512-EFYI/yMoQ1U08nZxQOZ7+4S0nOpKF45EVoWGef8L1kvSCMP3B3xSzwZeOmoF2tBVpbMssAgHEz43cf0ZulRDSQ==",
       "from": "sql.js@github:neilalexander/sql.js#252a72bf57b0538cbd49bbd6f70af71e516966ae"
+    },
+    "ws": {
+      "version": "7.5.2",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-7.5.2.tgz",
+      "integrity": "sha512-lkF7AWRicoB9mAgjeKbGqVUekLnSNO4VjKVnuPHpQeOxZOErX6BPXwJk70nFslRCEEA8EVW7ZjKwXaP9N+1sKQ==",
+      "requires": {}
     }
   }
 }
diff --git a/test/wasm/package.json b/test/wasm/package.json
index fa0e9730b..b28c30b1d 100644
--- a/test/wasm/package.json
+++ b/test/wasm/package.json
@@ -1,5 +1,7 @@
 {
   "dependencies": {
-    "sql.js": "github:neilalexander/sql.js#252a72bf57b0538cbd49bbd6f70af71e516966ae"
+    "isomorphic-ws": "^4.0.1",
+    "sql.js": "github:neilalexander/sql.js#252a72bf57b0538cbd49bbd6f70af71e516966ae",
+    "ws": "^7.5.2"
   }
 }