diff --git a/dune-project b/dune-project
index 082551c5..a6bb23ae 100644
--- a/dune-project
+++ b/dune-project
@@ -39,8 +39,8 @@
  (conflicts
   (trace
    (or
-    (< 0.3)
-    (>= 0.4))))
+    (< 0.4)
+    (>= 0.5))))
  (tags
   (instrumentation tracing opentelemetry datadog jaeger)))
 
diff --git a/opentelemetry.opam b/opentelemetry.opam
index d222450d..b2721d44 100644
--- a/opentelemetry.opam
+++ b/opentelemetry.opam
@@ -21,7 +21,7 @@ depends: [
 ]
 depopts: ["trace"]
 conflicts: [
-  "trace" {< "0.3" | >= "0.4"}
+  "trace" {< "0.4" | >= "0.5"}
 ]
 build: [
   ["dune" "subst"] {dev}