diff --git a/Sources/IndexStoreDB/SymbolProperty.swift b/Sources/IndexStoreDB/SymbolProperty.swift
index 92e5cc4..51ad2bd 100644
--- a/Sources/IndexStoreDB/SymbolProperty.swift
+++ b/Sources/IndexStoreDB/SymbolProperty.swift
@@ -13,7 +13,7 @@
 @_implementationOnly
 import CIndexStoreDB
 
-public struct SymbolProperty: OptionSet, Hashable {
+public struct SymbolProperty: OptionSet, Hashable, Sendable {
   public var rawValue: UInt64
 
   public static let generic: SymbolProperty = SymbolProperty(rawValue: INDEXSTOREDB_SYMBOL_PROPERTY_GENERIC)
diff --git a/Sources/IndexStoreDB/SymbolRole.swift b/Sources/IndexStoreDB/SymbolRole.swift
index 9f04779..cde8a26 100644
--- a/Sources/IndexStoreDB/SymbolRole.swift
+++ b/Sources/IndexStoreDB/SymbolRole.swift
@@ -13,7 +13,7 @@
 @_implementationOnly
 import CIndexStoreDB
 
-public struct SymbolRole: OptionSet, Hashable {
+public struct SymbolRole: OptionSet, Hashable, Sendable {
 
   public var rawValue: UInt64