diff --git a/CHANGELOG.md b/CHANGELOG.md
index 13e5b73e50b..2743be345ff 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -27,6 +27,9 @@ release.
 
 ### Common
 
+- OpenTelemetry clients MUST follow SemVer 2.0.0.
+  ([#4039](https://github.com/open-telemetry/opentelemetry-specification/pull/4039))
+
 ### Supplementary Guidelines
 
 ## v1.33.0 (2024-05-09)
diff --git a/specification/versioning-and-stability.md b/specification/versioning-and-stability.md
index 07a545afb5c..fd5d8435ff7 100644
--- a/specification/versioning-and-stability.md
+++ b/specification/versioning-and-stability.md
@@ -310,7 +310,7 @@ We invented a new tracing API, but continue to support the old one.
 
 ## Version numbers
 
-OpenTelemetry clients follow [Semantic Versioning 2.0.0](https://semver.org/spec/v2.0.0.html), with the following clarifications.
+OpenTelemetry clients MUST follow [Semantic Versioning 2.0.0](https://semver.org/spec/v2.0.0.html), with the following clarifications.
 
 OpenTelemetry clients have four components: API, SDK, Semantic Conventions, and Contrib.