diff --git a/crates/runner-shared/src/fifo.rs b/crates/runner-shared/src/fifo.rs
index 84baed2a..d653c32c 100644
--- a/crates/runner-shared/src/fifo.rs
+++ b/crates/runner-shared/src/fifo.rs
@@ -3,7 +3,7 @@
 pub const RUNNER_CTL_FIFO: &str = "/tmp/runner.ctl.fifo";
 pub const RUNNER_ACK_FIFO: &str = "/tmp/runner.ack.fifo";
 
-pub const CURRENT_PROTOCOL_VERSION: u64 = 1;
+pub const CURRENT_PROTOCOL_VERSION: u64 = 2;
 
 /// The different markers that can be set in the perf.data.
 ///