diff --git a/README.md b/README.md
index e339eab1c..9a0654afb 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,7 @@
 ```sh
 brew install postgres
 createuser -d postgres
+psql template1 -c "ALTER ROLE postgres WITH SUPERUSER;"
 createdb dbapi_test -O postgres
 cabal install -j --enable-tests --reorder-goals
 ```