diff --git a/src/lib.rs b/src/lib.rs
index 9cd225ddf..cf2e10ab5 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -22,6 +22,7 @@
 //! - `opentelemetry_0_15`: same as above but using `opentelemetry` 0.15;
 //! - `opentelemetry_0_16`: same as above but using `opentelemetry` 0.16;
 //! - `opentelemetry_0_17`: same as above but using `opentelemetry` 0.17;
+//! - `opentelemetry_0_18`: same as above but using `opentelemetry` 0.18;
 //! - `emit_event_on_error`: emit a [`tracing`] event when request processing fails with an error (enabled by default).
 //!
 //! ## Quickstart