diff --git a/swift/Sources/FlatBuffers/Verifiable.swift b/swift/Sources/FlatBuffers/Verifiable.swift
index e601cfc..7ecb454 100644
--- a/swift/Sources/FlatBuffers/Verifiable.swift
+++ b/swift/Sources/FlatBuffers/Verifiable.swift
@@ -14,7 +14,11 @@
  * limitations under the License.
  */
 
+#if !os(WASI)
 import Foundation
+#else
+import SwiftOverlayShims
+#endif
 
 /// Verifiable is a protocol all swift flatbuffers object should conform to,
 /// since swift is similar to `cpp` and `rust` where the data is read directly