diff --git a/assert/assertion_compare_can_convert.go b/assert/assertion_compare_can_convert.go
index 4a5627c..df22c47 100644
--- a/assert/assertion_compare_can_convert.go
+++ b/assert/assertion_compare_can_convert.go
@@ -1,3 +1,4 @@
+//go:build go1.17
 // +build go1.17
 
 // TODO: once support for Go 1.16 is dropped, this file can be
diff --git a/assert/assertion_compare_go1.17_test.go b/assert/assertion_compare_go1.17_test.go
index bff219d..d3ea935 100644
--- a/assert/assertion_compare_go1.17_test.go
+++ b/assert/assertion_compare_go1.17_test.go
@@ -1,3 +1,4 @@
+//go:build go1.17
 // +build go1.17
 
 // TODO: once support for Go 1.16 is dropped, this file can be
diff --git a/assert/assertion_compare_legacy.go b/assert/assertion_compare_legacy.go
index 0bb8ad7..1701af2 100644
--- a/assert/assertion_compare_legacy.go
+++ b/assert/assertion_compare_legacy.go
@@ -1,3 +1,4 @@
+//go:build !go1.17
 // +build !go1.17
 
 // TODO: once support for Go 1.16 is dropped, this file can be