diff --git a/encode_map.go b/encode_map.go
index 8b4b4bb..0ac63a1 100644
--- a/encode_map.go
+++ b/encode_map.go
@@ -1,7 +1,7 @@
 // Copyright (c) Faye Amacker. All rights reserved.
 // Licensed under the MIT License. See LICENSE in the project root for license information.
 
-//go:build go1.20
+//go:build go1.20 && !tinygo
 
 package cbor
 
diff --git a/encode_map_go117.go b/encode_map_go117.go
index 31c3933..e06b0cd 100644
--- a/encode_map_go117.go
+++ b/encode_map_go117.go
@@ -1,7 +1,7 @@
 // Copyright (c) Faye Amacker. All rights reserved.
 // Licensed under the MIT License. See LICENSE in the project root for license information.
 
-//go:build !go1.20
+//go:build !go1.20 || tinygo
 
 package cbor