diff --git a/README.md b/README.md
index 68e2965..d29d93b 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,8 @@
 # open2opaque
 
-The program open2opaque migrates Go code using Go Protobuf from the Open API
+The open2opaque tool migrates Go packages from the Go Protobuf Open Struct API
 to the Opaque API.
 
-See https://go.dev/blog/protobuf-opaque for context.
+For documentation, see:
+* https://go.dev/blog/protobuf-opaque
+* https://protobuf.dev/reference/go/opaque-migration/