diff --git a/examples/bitcoin/test/pretest.ts b/examples/bitcoin/test/pretest.ts
index 18853b2ee6..320939789e 100644
--- a/examples/bitcoin/test/pretest.ts
+++ b/examples/bitcoin/test/pretest.ts
@@ -3,6 +3,10 @@ import { execSync } from 'child_process';
 async function pretest() {
     await new Promise((resolve) => setTimeout(resolve, 5000));
 
+    execSync(`rm -rf .bitcoin/regtest`, {
+        stdio: 'inherit'
+    });
+
     execSync(`dfx canister uninstall-code bitcoin || true`, {
         stdio: 'inherit'
     });