diff --git a/content/module-mirror-launch.article b/content/module-mirror-launch.article
index 58b811a..391fa16 100644
--- a/content/module-mirror-launch.article
+++ b/content/module-mirror-launch.article
@@ -114,10 +114,10 @@
 
 If you are using Go 1.12 or earlier, you can manually check a `go.sum` file
 against the checksum database with
-[[https://godoc.org/golang.org/x/exp/sumdb/gosumcheck][gosumcheck]]:
+[[https://godoc.org/golang.org/x/mod/gosumcheck][gosumcheck]]:
 
-    go get golang.org/x/exp/sumdb/gosumcheck
-    gosumcheck /path/to/go.sum
+    $ go get golang.org/x/mod/gosumcheck
+    $ gosumcheck /path/to/go.sum
 
 In addition to verification done by the `go` command, third-party
 auditors can hold the checksum database accountable by iterating over the log