diff --git a/Sources/SemanticVersionComparable/BuildMetaData/BuildMetaData.swift b/Sources/SemanticVersionComparable/BuildMetaData/BuildMetaData.swift
index a18616a..88e0389 100644
--- a/Sources/SemanticVersionComparable/BuildMetaData/BuildMetaData.swift
+++ b/Sources/SemanticVersionComparable/BuildMetaData/BuildMetaData.swift
@@ -10,7 +10,7 @@
 /// - Note: Identifier can be described using alphanumeric letters or digits.
 ///
 /// - Attention: Strings not conforming to `SemVer` will be handled as `nil`.
-public enum BuildMetaData: Comparable {
+public enum BuildMetaData: Comparable, Sendable {
     /// Alphanumeric identifier are lower- and uppercased letters and numbers from 0-9.
     case alphaNumeric(_ identifier: String)
 
diff --git a/Sources/SemanticVersionComparable/PrereleaseIdentifier/PrereleaseIdentifier.swift b/Sources/SemanticVersionComparable/PrereleaseIdentifier/PrereleaseIdentifier.swift
index 5f95ae0..6dd4d38 100644
--- a/Sources/SemanticVersionComparable/PrereleaseIdentifier/PrereleaseIdentifier.swift
+++ b/Sources/SemanticVersionComparable/PrereleaseIdentifier/PrereleaseIdentifier.swift
@@ -11,7 +11,7 @@
 ///
 /// - Attention: If an identifier does not show conformance for beeing numeric or alphanumeric it is initialized
 ///              as `nil`.
-public enum PrereleaseIdentifier: Comparable, Hashable {
+public enum PrereleaseIdentifier: Comparable, Hashable, Sendable {
     /// Identifier displaying `alpha`.
     case alpha