diff --git a/README.md b/README.md
index 94d1c64..767b7b5 100644
--- a/README.md
+++ b/README.md
@@ -6,4 +6,5 @@ Work in progress. Everything will change. Documentation to follow.
 
 * https://github.com/whosonfirst/go-whosonfirst-spatial
 * https://github.com/whosonfirst/go-whosonfirst-spatial-rtree
-* https://github.com/whosonfirst/go-whosonfirst-spatial-pip
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+* https://github.com/whosonfirst/go-whosonfirst-spatial-pip
+* https://github.com/grpc/grpc-go
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