diff --git a/go.mod b/go.mod
index 9235759..f1a2526 100644
--- a/go.mod
+++ b/go.mod
@@ -1,3 +1,3 @@
 module golang.org/x/xerrors
 
-go 1.17
+go 1.18
diff --git a/wrap_113_test.go b/wrap_113_test.go
index 48fedb5..05f0f4d 100644
--- a/wrap_113_test.go
+++ b/wrap_113_test.go
@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build go1.13
-// +build go1.13
 
 package xerrors_test