diff --git a/README.md b/README.md
index 474d2d484..c67afbfe9 100644
--- a/README.md
+++ b/README.md
@@ -49,6 +49,7 @@ actix-web = "4"
 - `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