use long key fingerprint to prevent collisions
@@ -57,7 +57,7 @@ The stable and the nightly packages are built for Ubuntu Xenial (16.04), Ubuntu
**Stable and Signed Packages**
```bash
-sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys D4284CDD
+sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 4052245BD4284CDD
echo "deb https://repo.iovisor.org/apt/xenial xenial main" | sudo tee /etc/apt/sources.list.d/iovisor.list
sudo apt-get update
sudo apt-get install bcc-tools libbcc-examples linux-headers-$(uname -r)
